diff --git a/crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B912.py b/crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B912.py
new file mode 100644
index 0000000000..32c7afb2f8
--- /dev/null
+++ b/crates/ruff_linter/resources/test/fixtures/flake8_bugbear/B912.py
@@ -0,0 +1,33 @@
+from itertools import count, cycle, repeat
+
+# Errors
+map(lambda x: x, [1, 2, 3])
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+
+# Errors (limited iterators).
+map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4))
+
+import builtins
+# Still an error even though it uses the qualified name
+builtins.map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+
+# OK
+map(lambda x: x, [1, 2, 3], strict=True)
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], strict=True)
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], strict=False)
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=True)
+map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True), strict=True)
+
+# OK (single iterable - no strict required)
+map(lambda x: x, [1, 2, 3])
+
+# OK (infinite iterators)
+map(lambda x, y: x + y, [1, 2, 3], cycle([1, 2, 3]))
+map(lambda x, y: x + y, [1, 2, 3], repeat(1))
+map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=None))
+map(lambda x, y: x + y, [1, 2, 3], count())
diff --git a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs
index 97dc1052db..75bea0342c 100644
--- a/crates/ruff_linter/src/checkers/ast/analyze/expression.rs
+++ b/crates/ruff_linter/src/checkers/ast/analyze/expression.rs
@@ -741,6 +741,11 @@ pub(crate) fn expression(expr: &Expr, checker: &Checker) {
                     flake8_bugbear::rules::zip_without_explicit_strict(checker, call);
                 }
             }
+            if checker.is_rule_enabled(Rule::MapWithoutExplicitStrict) {
+                if checker.target_version() >= PythonVersion::PY314 {
+                    flake8_bugbear::rules::map_without_explicit_strict(checker, call);
+                }
+            }
             if checker.is_rule_enabled(Rule::NoExplicitStacklevel) {
                 flake8_bugbear::rules::no_explicit_stacklevel(checker, call);
             }
diff --git a/crates/ruff_linter/src/codes.rs b/crates/ruff_linter/src/codes.rs
index eba1404f2b..9a588f09cb 100644
--- a/crates/ruff_linter/src/codes.rs
+++ b/crates/ruff_linter/src/codes.rs
@@ -394,6 +394,7 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8Bugbear, "905") => (RuleGroup::Stable, rules::flake8_bugbear::rules::ZipWithoutExplicitStrict),
         (Flake8Bugbear, "909") => (RuleGroup::Preview, rules::flake8_bugbear::rules::LoopIteratorMutation),
         (Flake8Bugbear, "911") => (RuleGroup::Stable, rules::flake8_bugbear::rules::BatchedWithoutExplicitStrict),
+        (Flake8Bugbear, "912") => (RuleGroup::Preview, rules::flake8_bugbear::rules::MapWithoutExplicitStrict),
 
         // flake8-blind-except
         (Flake8BlindExcept, "001") => (RuleGroup::Stable, rules::flake8_blind_except::rules::BlindExcept),
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/helpers.rs b/crates/ruff_linter/src/rules/flake8_bugbear/helpers.rs
index 51015eb63a..090658de7d 100644
--- a/crates/ruff_linter/src/rules/flake8_bugbear/helpers.rs
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/helpers.rs
@@ -4,6 +4,7 @@ use ruff_python_trivia::{SimpleTokenKind, SimpleTokenizer};
 use ruff_text_size::{Ranged, TextRange};
 
 use crate::Locator;
+use ruff_python_ast::{self as ast, Arguments, Expr};
 
 /// Return `true` if the statement containing the current expression is the last
 /// top-level expression in the cell. This assumes that the source is a Jupyter
@@ -27,3 +28,54 @@ pub(super) fn at_last_top_level_expression_in_cell(
             .all(|token| token.kind() == SimpleTokenKind::Semi || token.kind().is_trivia())
         })
 }
+
+/// Return `true` if the [`Expr`] appears to be an infinite iterator (e.g., a call to
+/// `itertools.cycle` or similar).
+pub(crate) fn is_infinite_iterable(arg: &Expr, semantic: &SemanticModel) -> bool {
+    let Expr::Call(ast::ExprCall {
+        func,
+        arguments: Arguments { args, keywords, .. },
+        ..
+    }) = &arg
+    else {
+        return false;
+    };
+
+    semantic
+        .resolve_qualified_name(func)
+        .is_some_and(|qualified_name| match qualified_name.segments() {
+            ["itertools", "cycle" | "count"] => true,
+            ["itertools", "repeat"] => {
+                // Ex) `itertools.repeat(1)`
+                if keywords.is_empty() && args.len() == 1 {
+                    return true;
+                }
+
+                // Ex) `itertools.repeat(1, None)`
+                if args.len() == 2 && args[1].is_none_literal_expr() {
+                    return true;
+                }
+
+                // Ex) `itertools.repeat(1, times=None)`
+                for keyword in keywords {
+                    if keyword.arg.as_ref().is_some_and(|name| name == "times")
+                        && keyword.value.is_none_literal_expr()
+                    {
+                        return true;
+                    }
+                }
+
+                false
+            }
+            _ => false,
+        })
+}
+
+/// Return `true` if any expression in the iterator appears to be an infinite iterator.
+pub(crate) fn any_infinite_iterables<'a>(
+    iter: impl IntoIterator<Item = &'a Expr>,
+    semantic: &SemanticModel,
+) -> bool {
+    iter.into_iter()
+        .any(|arg| is_infinite_iterable(arg, semantic))
+}
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/mod.rs b/crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
index 2a8bd80a0f..da0aa312e2 100644
--- a/crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
@@ -16,6 +16,7 @@ mod tests {
     use crate::settings::LinterSettings;
     use crate::test::test_path;
 
+    use crate::settings::types::PreviewMode;
     use ruff_python_ast::PythonVersion;
 
     #[test_case(Rule::AbstractBaseClassWithoutAbstractMethod, Path::new("B024.py"))]
@@ -81,11 +82,35 @@ mod tests {
         Ok(())
     }
 
+    #[test_case(Rule::MapWithoutExplicitStrict, Path::new("B912.py"))]
+    fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> {
+        let snapshot = format!(
+            "preview__{}_{}",
+            rule_code.noqa_code(),
+            path.to_string_lossy()
+        );
+        let diagnostics = test_path(
+            Path::new("flake8_bugbear").join(path).as_path(),
+            &LinterSettings {
+                preview: PreviewMode::Enabled,
+                unresolved_target_version: PythonVersion::PY314.into(),
+                ..LinterSettings::for_rule(rule_code)
+            },
+        )?;
+        assert_diagnostics!(snapshot, diagnostics);
+        Ok(())
+    }
+
     #[test_case(
         Rule::ClassAsDataStructure,
         Path::new("class_as_data_structure.py"),
         PythonVersion::PY39
     )]
+    #[test_case(
+        Rule::MapWithoutExplicitStrict,
+        Path::new("B912.py"),
+        PythonVersion::PY313
+    )]
     fn rules_with_target_version(
         rule_code: Rule,
         path: &Path,
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/rules/batched_without_explicit_strict.rs b/crates/ruff_linter/src/rules/flake8_bugbear/rules/batched_without_explicit_strict.rs
index e7c467ca84..78e29661b3 100644
--- a/crates/ruff_linter/src/rules/flake8_bugbear/rules/batched_without_explicit_strict.rs
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/rules/batched_without_explicit_strict.rs
@@ -3,7 +3,7 @@ use ruff_python_ast::ExprCall;
 use ruff_python_ast::PythonVersion;
 
 use crate::checkers::ast::Checker;
-use crate::rules::flake8_bugbear::rules::is_infinite_iterable;
+use crate::rules::flake8_bugbear::helpers::is_infinite_iterable;
 use crate::{FixAvailability, Violation};
 
 /// ## What it does
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/rules/map_without_explicit_strict.rs b/crates/ruff_linter/src/rules/flake8_bugbear/rules/map_without_explicit_strict.rs
new file mode 100644
index 0000000000..49d6049374
--- /dev/null
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/rules/map_without_explicit_strict.rs
@@ -0,0 +1,89 @@
+use ruff_macros::{ViolationMetadata, derive_message_formats};
+
+use ruff_python_ast::{self as ast};
+use ruff_text_size::Ranged;
+
+use crate::checkers::ast::Checker;
+use crate::fix::edits::add_argument;
+use crate::rules::flake8_bugbear::helpers::any_infinite_iterables;
+use crate::{AlwaysFixableViolation, Applicability, Fix};
+
+/// ## What it does
+/// Checks for `map` calls without an explicit `strict` parameter when called with two or more iterables.
+///
+/// This rule applies to Python 3.14 and later, where `map` accepts a `strict` keyword
+/// argument. For details, see: [What’s New in Python 3.14](https://docs.python.org/dev/whatsnew/3.14.html).
+///
+/// ## Why is this bad?
+/// By default, if the iterables passed to `map` are of different lengths, the
+/// resulting iterator will be silently truncated to the length of the shortest
+/// iterable. This can lead to subtle bugs.
+///
+/// Pass `strict=True` to raise a `ValueError` if the iterables are of
+/// non-uniform length. Alternatively, if the iterables are deliberately of
+/// different lengths, pass `strict=False` to make the intention explicit.
+///
+/// ## Example
+/// ```python
+/// map(f, a, b)
+/// ```
+///
+/// Use instead:
+/// ```python
+/// map(f, a, b, strict=True)
+/// ```
+///
+/// ## Fix safety
+/// This rule's fix is marked as unsafe for `map` calls that contain
+/// `**kwargs`, as adding a `strict` keyword argument to such a call may lead
+/// to a duplicate keyword argument error.
+///
+/// ## References
+/// - [Python documentation: `map`](https://docs.python.org/3/library/functions.html#map)
+/// - [What’s New in Python 3.14](https://docs.python.org/dev/whatsnew/3.14.html)
+#[derive(ViolationMetadata)]
+pub(crate) struct MapWithoutExplicitStrict;
+
+impl AlwaysFixableViolation for MapWithoutExplicitStrict {
+    #[derive_message_formats]
+    fn message(&self) -> String {
+        "`map()` without an explicit `strict=` parameter".to_string()
+    }
+
+    fn fix_title(&self) -> String {
+        "Add explicit value for parameter `strict=`".to_string()
+    }
+}
+
+/// B912
+pub(crate) fn map_without_explicit_strict(checker: &Checker, call: &ast::ExprCall) {
+    let semantic = checker.semantic();
+
+    if semantic.match_builtin_expr(&call.func, "map")
+        && call.arguments.find_keyword("strict").is_none()
+        && call.arguments.args.len() >= 3 // function + at least 2 iterables
+        && !any_infinite_iterables(call.arguments.args.iter().skip(1), semantic)
+    {
+        checker
+            .report_diagnostic(MapWithoutExplicitStrict, call.range())
+            .set_fix(Fix::applicable_edit(
+                add_argument(
+                    "strict=False",
+                    &call.arguments,
+                    checker.comment_ranges(),
+                    checker.locator().contents(),
+                ),
+                // If the function call contains `**kwargs`, mark the fix as unsafe.
+                if call
+                    .arguments
+                    .keywords
+                    .iter()
+                    .any(|keyword| keyword.arg.is_none())
+                {
+                    Applicability::Unsafe
+                } else {
+                    Applicability::Safe
+                },
+            ));
+    }
+}
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/rules/mod.rs b/crates/ruff_linter/src/rules/flake8_bugbear/rules/mod.rs
index dcf29d0fc1..e0beabd7cb 100644
--- a/crates/ruff_linter/src/rules/flake8_bugbear/rules/mod.rs
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/rules/mod.rs
@@ -16,6 +16,7 @@ pub(crate) use getattr_with_constant::*;
 pub(crate) use jump_statement_in_finally::*;
 pub(crate) use loop_iterator_mutation::*;
 pub(crate) use loop_variable_overrides_iterator::*;
+pub(crate) use map_without_explicit_strict::*;
 pub(crate) use mutable_argument_default::*;
 pub(crate) use mutable_contextvar_default::*;
 pub(crate) use no_explicit_stacklevel::*;
@@ -56,6 +57,7 @@ mod getattr_with_constant;
 mod jump_statement_in_finally;
 mod loop_iterator_mutation;
 mod loop_variable_overrides_iterator;
+mod map_without_explicit_strict;
 mod mutable_argument_default;
 mod mutable_contextvar_default;
 mod no_explicit_stacklevel;
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/rules/zip_without_explicit_strict.rs b/crates/ruff_linter/src/rules/flake8_bugbear/rules/zip_without_explicit_strict.rs
index 73134c65b6..9a4694491e 100644
--- a/crates/ruff_linter/src/rules/flake8_bugbear/rules/zip_without_explicit_strict.rs
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/rules/zip_without_explicit_strict.rs
@@ -1,11 +1,11 @@
 use ruff_macros::{ViolationMetadata, derive_message_formats};
 
-use ruff_python_ast::{self as ast, Arguments, Expr};
-use ruff_python_semantic::SemanticModel;
+use ruff_python_ast::{self as ast};
 use ruff_text_size::Ranged;
 
 use crate::checkers::ast::Checker;
 use crate::fix::edits::add_argument;
+use crate::rules::flake8_bugbear::helpers::any_infinite_iterables;
 use crate::{AlwaysFixableViolation, Applicability, Fix};
 
 /// ## What it does
@@ -57,11 +57,7 @@ pub(crate) fn zip_without_explicit_strict(checker: &Checker, call: &ast::ExprCal
 
     if semantic.match_builtin_expr(&call.func, "zip")
         && call.arguments.find_keyword("strict").is_none()
-        && !call
-            .arguments
-            .args
-            .iter()
-            .any(|arg| is_infinite_iterable(arg, semantic))
+        && !any_infinite_iterables(call.arguments.args.iter(), semantic)
     {
         checker
             .report_diagnostic(ZipWithoutExplicitStrict, call.range())
@@ -86,47 +82,3 @@ pub(crate) fn zip_without_explicit_strict(checker: &Checker, call: &ast::ExprCal
             ));
     }
 }
-
-/// Return `true` if the [`Expr`] appears to be an infinite iterator (e.g., a call to
-/// `itertools.cycle` or similar).
-pub(crate) fn is_infinite_iterable(arg: &Expr, semantic: &SemanticModel) -> bool {
-    let Expr::Call(ast::ExprCall {
-        func,
-        arguments: Arguments { args, keywords, .. },
-        ..
-    }) = &arg
-    else {
-        return false;
-    };
-
-    semantic
-        .resolve_qualified_name(func)
-        .is_some_and(|qualified_name| {
-            match qualified_name.segments() {
-                ["itertools", "cycle" | "count"] => true,
-                ["itertools", "repeat"] => {
-                    // Ex) `itertools.repeat(1)`
-                    if keywords.is_empty() && args.len() == 1 {
-                        return true;
-                    }
-
-                    // Ex) `itertools.repeat(1, None)`
-                    if args.len() == 2 && args[1].is_none_literal_expr() {
-                        return true;
-                    }
-
-                    // Ex) `iterools.repeat(1, times=None)`
-                    for keyword in keywords {
-                        if keyword.arg.as_ref().is_some_and(|name| name == "times") {
-                            if keyword.value.is_none_literal_expr() {
-                                return true;
-                            }
-                        }
-                    }
-
-                    false
-                }
-                _ => false,
-            }
-        })
-}
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B912_py313_B912.py.snap b/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B912_py313_B912.py.snap
new file mode 100644
index 0000000000..967e60a4f9
--- /dev/null
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__B912_py313_B912.py.snap
@@ -0,0 +1,4 @@
+---
+source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
+---
+
diff --git a/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B912_B912.py.snap b/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B912_B912.py.snap
new file mode 100644
index 0000000000..102f1ce8ff
--- /dev/null
+++ b/crates/ruff_linter/src/rules/flake8_bugbear/snapshots/ruff_linter__rules__flake8_bugbear__tests__preview__B912_B912.py.snap
@@ -0,0 +1,141 @@
+---
+source: crates/ruff_linter/src/rules/flake8_bugbear/mod.rs
+---
+B912 [*] `map()` without an explicit `strict=` parameter
+ --> B912.py:5:1
+  |
+3 | # Errors
+4 | map(lambda x: x, [1, 2, 3])
+5 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+6 | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+  |
+help: Add explicit value for parameter `strict=`
+2 | 
+3 | # Errors
+4 | map(lambda x: x, [1, 2, 3])
+  - map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+5 + map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], strict=False)
+6 | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+8 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+
+B912 [*] `map()` without an explicit `strict=` parameter
+ --> B912.py:6:1
+  |
+4 | map(lambda x: x, [1, 2, 3])
+5 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+6 | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+8 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+  |
+help: Add explicit value for parameter `strict=`
+3 | # Errors
+4 | map(lambda x: x, [1, 2, 3])
+5 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+  - map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+6 + map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9], strict=False)
+7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+8 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+9 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+
+B912 [*] `map()` without an explicit `strict=` parameter
+ --> B912.py:7:1
+  |
+5 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+6 | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+8 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+9 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+  |
+help: Add explicit value for parameter `strict=`
+4  | map(lambda x: x, [1, 2, 3])
+5  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+6  | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+   - map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+7  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+8  + map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+9  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+10 | 
+11 | # Errors (limited iterators).
+
+B912 [*] `map()` without an explicit `strict=` parameter
+  --> B912.py:9:1
+   |
+ 7 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+ 8 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+ 9 | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+10 |
+11 | # Errors (limited iterators).
+   |
+help: Add explicit value for parameter `strict=`
+6  | map(lambda x, y, z: x + y + z, [1, 2, 3], [4, 5, 6], [7, 8, 9])
+7  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]))
+8  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9]), strict=False)
+   - map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+9  + map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True), strict=False)
+10 | 
+11 | # Errors (limited iterators).
+12 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+
+B912 [*] `map()` without an explicit `strict=` parameter
+  --> B912.py:12:1
+   |
+11 | # Errors (limited iterators).
+12 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+13 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4))
+   |
+help: Add explicit value for parameter `strict=`
+9  | map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], *map(lambda x: x, [7, 8, 9], strict=True))
+10 | 
+11 | # Errors (limited iterators).
+   - map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+12 + map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1), strict=False)
+13 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4))
+14 | 
+15 | import builtins
+
+B912 [*] `map()` without an explicit `strict=` parameter
+  --> B912.py:13:1
+   |
+11 | # Errors (limited iterators).
+12 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+13 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4))
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+14 |
+15 | import builtins
+   |
+help: Add explicit value for parameter `strict=`
+10 | 
+11 | # Errors (limited iterators).
+12 | map(lambda x, y: x + y, [1, 2, 3], repeat(1, 1))
+   - map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4))
+13 + map(lambda x, y: x + y, [1, 2, 3], repeat(1, times=4), strict=False)
+14 | 
+15 | import builtins
+16 | # Still an error even though it uses the qualified name
+
+B912 [*] `map()` without an explicit `strict=` parameter
+  --> B912.py:17:1
+   |
+15 | import builtins
+16 | # Still an error even though it uses the qualified name
+17 | builtins.map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+18 |
+19 | # OK
+   |
+help: Add explicit value for parameter `strict=`
+14 | 
+15 | import builtins
+16 | # Still an error even though it uses the qualified name
+   - builtins.map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6])
+17 + builtins.map(lambda x, y: x + y, [1, 2, 3], [4, 5, 6], strict=False)
+18 | 
+19 | # OK
+20 | map(lambda x: x, [1, 2, 3], strict=True)
diff --git a/ruff.schema.json b/ruff.schema.json
index 97fec6ae32..1edc77e55d 100644
--- a/ruff.schema.json
+++ b/ruff.schema.json
@@ -3073,6 +3073,7 @@
         "B909",
         "B91",
         "B911",
+        "B912",
         "BLE",
         "BLE0",
         "BLE00",