diff --git a/include/variables.h b/include/variables.h
index 083426294b..21a97a9293 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -202,8 +202,6 @@ extern volatile OSTime gRDPTotalTime;
 
 extern ActiveSound gActiveSounds[7][MAX_CHANNELS_PER_BANK]; // total size = 0xA8
 extern u8 gSoundBankMuted[];
-extern u8 D_801333F0;
-extern u8 gAudioSfxSwapOff;
 extern u16 gAudioSfxSwapSource[10];
 extern u16 gAudioSfxSwapTarget[10];
 extern u8 gAudioSfxSwapMode[10];
diff --git a/src/code/z_skelanime.c b/src/code/z_skelanime.c
index 7ced702785..ffc294d0d5 100644
--- a/src/code/z_skelanime.c
+++ b/src/code/z_skelanime.c
@@ -9,8 +9,6 @@ s32 SkelAnime_LoopFull(SkelAnime* skelAnime);
 s32 SkelAnime_Once(SkelAnime* skelAnime);
 s32 SkelAnime_LoopPartial(SkelAnime* skelAnime);
 
-void SkelAnime_CopyFrameTable(SkelAnime* skelAnime, Vec3s* dst, Vec3s* src);
-
 static u32 sDisableAnimQueueFlags = 0;
 static u32 sAnimQueueFlags;
 
diff --git a/src/libultra/io/visetevent.c b/src/libultra/io/visetevent.c
index 0239c1f7c4..89e482cf84 100644
--- a/src/libultra/io/visetevent.c
+++ b/src/libultra/io/visetevent.c
@@ -1,7 +1,5 @@
 #include "global.h"
 
-extern OSViContext* __osViNext;
-
 void osViSetEvent(OSMesgQueue* mq, OSMesg msg, u32 retraceCount) {
     register u32 prevInt = __osDisableInt();
 
diff --git a/src/overlays/actors/ovl_En_Horse/z_en_horse.c b/src/overlays/actors/ovl_En_Horse/z_en_horse.c
index f1f82abeb0..a2fceb1013 100644
--- a/src/overlays/actors/ovl_En_Horse/z_en_horse.c
+++ b/src/overlays/actors/ovl_En_Horse/z_en_horse.c
@@ -3106,10 +3106,6 @@ void EnHorse_BgCheckSlowMoving(EnHorse* this, PlayState* play) {
     }
 }
 
-void EnHorse_HighJumpInit(EnHorse* this, PlayState* play);
-void EnHorse_Stub2(EnHorse* this);
-void EnHorse_Stub1(EnHorse* this);
-
 void EnHorse_UpdateBgCheckInfo(EnHorse* this, PlayState* play) {
     s32 pad;
     s32 pad2;
diff --git a/src/overlays/actors/ovl_En_Skj/z_en_skj.c b/src/overlays/actors/ovl_En_Skj/z_en_skj.c
index d26cba52f1..3ba2a3efea 100644
--- a/src/overlays/actors/ovl_En_Skj/z_en_skj.c
+++ b/src/overlays/actors/ovl_En_Skj/z_en_skj.c
@@ -56,7 +56,6 @@ void EnSkj_GiveOcarinaGameReward(EnSkj* this, PlayState* play);
 void EnSkj_FinishOcarinaGameRound(EnSkj* this, PlayState* play);
 void EnSkj_WaitForNextRound(EnSkj* this, PlayState* play);
 void EnSkj_WaitForOfferResponse(EnSkj* this, PlayState* play);
-void EnSkj_SetupWaitForOcarina(EnSkj* this, PlayState* play);
 void EnSkj_CleanupOcarinaGame(EnSkj* this, PlayState* play);
 
 void EnSkj_Fade(EnSkj* this, PlayState* play);
diff --git a/src/overlays/actors/ovl_Object_Kankyo/z_object_kankyo.c b/src/overlays/actors/ovl_Object_Kankyo/z_object_kankyo.c
index 685cfaca75..991b14a024 100644
--- a/src/overlays/actors/ovl_Object_Kankyo/z_object_kankyo.c
+++ b/src/overlays/actors/ovl_Object_Kankyo/z_object_kankyo.c
@@ -33,8 +33,6 @@ void ObjectKankyo_DrawLightning(ObjectKankyo* this, PlayState* play);
 void ObjectKankyo_DrawSunGraveSpark(ObjectKankyo* this, PlayState* play);
 void ObjectKankyo_DrawBeams(ObjectKankyo* this, PlayState* play);
 
-extern Mtx D_01000000;
-
 static void* sEffLightningTextures[] = {
     gEffLightning1Tex, gEffLightning2Tex, gEffLightning3Tex, gEffLightning4Tex,
     gEffLightning5Tex, gEffLightning6Tex, gEffLightning7Tex, gEffLightning8Tex,