diff --git a/crates/ruff_linter/src/checkers/ast/mod.rs b/crates/ruff_linter/src/checkers/ast/mod.rs
index d91dcc25f9..faaf41595a 100644
--- a/crates/ruff_linter/src/checkers/ast/mod.rs
+++ b/crates/ruff_linter/src/checkers/ast/mod.rs
@@ -2301,7 +2301,9 @@ impl<'a> Checker<'a> {
                         }
                     } else {
                         if self.enabled(Rule::UndefinedExport) {
-                            if !self.path.ends_with("__init__.py") {
+                            if self.settings.preview.is_enabled()
+                                || !self.path.ends_with("__init__.py")
+                            {
                                 self.diagnostics.push(
                                     Diagnostic::new(
                                         pyflakes::rules::UndefinedExport {
diff --git a/crates/ruff_linter/src/rules/pyflakes/mod.rs b/crates/ruff_linter/src/rules/pyflakes/mod.rs
index 107cb96fb3..81bc61c1f1 100644
--- a/crates/ruff_linter/src/rules/pyflakes/mod.rs
+++ b/crates/ruff_linter/src/rules/pyflakes/mod.rs
@@ -212,6 +212,7 @@ mod tests {
     #[test_case(Rule::UnusedImport, Path::new("F401_27__all_mistyped/__init__.py"))]
     #[test_case(Rule::UnusedImport, Path::new("F401_28__all_multiple/__init__.py"))]
     #[test_case(Rule::UnusedImport, Path::new("F401_29__all_conditional/__init__.py"))]
+    #[test_case(Rule::UndefinedExport, Path::new("__init__.py"))]
     fn preview_rules(rule_code: Rule, path: &Path) -> Result<()> {
         let snapshot = format!(
             "preview__{}_{}",
diff --git a/crates/ruff_linter/src/rules/pyflakes/rules/undefined_export.rs b/crates/ruff_linter/src/rules/pyflakes/rules/undefined_export.rs
index 6858f1124c..a922c43b3e 100644
--- a/crates/ruff_linter/src/rules/pyflakes/rules/undefined_export.rs
+++ b/crates/ruff_linter/src/rules/pyflakes/rules/undefined_export.rs
@@ -13,6 +13,11 @@ use ruff_macros::{derive_message_formats, violation};
 /// Including an undefined name in `__all__` is likely to raise `NameError` at
 /// runtime, when the module is imported.
 ///
+/// In [preview], this rule will flag undefined names in `__init__.py` file,
+/// even if those names implicitly refer to other modules in the package. Users
+/// that rely on implicit exports should disable this rule in `__init__.py`
+/// files via [`lint.per-file-ignores`].
+///
 /// ## Example
 /// ```python
 /// from foo import bar
@@ -31,6 +36,8 @@ use ruff_macros::{derive_message_formats, violation};
 ///
 /// ## References
 /// - [Python documentation: `__all__`](https://docs.python.org/3/tutorial/modules.html#importing-from-a-package)
+///
+/// [preview]: https://docs.astral.sh/ruff/preview/
 #[violation]
 pub struct UndefinedExport {
     pub name: String,
diff --git a/crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__preview__F822___init__.py.snap b/crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__preview__F822___init__.py.snap
new file mode 100644
index 0000000000..d9761fcd78
--- /dev/null
+++ b/crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__preview__F822___init__.py.snap
@@ -0,0 +1,26 @@
+---
+source: crates/ruff_linter/src/rules/pyflakes/mod.rs
+---
+__init__.py:5:12: F822 Undefined name `a` in `__all__`
+  |
+3 | print(__path__)
+4 | 
+5 | __all__ = ["a", "b", "c"]
+  |            ^^^ F822
+  |
+
+__init__.py:5:17: F822 Undefined name `b` in `__all__`
+  |
+3 | print(__path__)
+4 | 
+5 | __all__ = ["a", "b", "c"]
+  |                 ^^^ F822
+  |
+
+__init__.py:5:22: F822 Undefined name `c` in `__all__`
+  |
+3 | print(__path__)
+4 | 
+5 | __all__ = ["a", "b", "c"]
+  |                      ^^^ F822
+  |