diff --git a/source/blender/sequencer/intern/animation.cc b/source/blender/sequencer/intern/animation.cc
index 1174d93665e..985535b7fcf 100644
--- a/source/blender/sequencer/intern/animation.cc
+++ b/source/blender/sequencer/intern/animation.cc
@@ -12,7 +12,6 @@
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
-#include "BKE_animsys.h"
 #include "BKE_fcurve.h"
 
 #include "BLI_ghash.h"
diff --git a/source/blender/sequencer/intern/channels.cc b/source/blender/sequencer/intern/channels.cc
index 851854c1d5e..55fa661a1e6 100644
--- a/source/blender/sequencer/intern/channels.cc
+++ b/source/blender/sequencer/intern/channels.cc
@@ -11,15 +11,11 @@
 #include "MEM_guardedalloc.h"
 
 #include "DNA_listBase.h"
-#include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
 #include "BLI_blenlib.h"
 
 #include "SEQ_channels.hh"
-#include "SEQ_iterator.hh"
-#include "SEQ_relations.hh"
-#include "SEQ_sequencer.hh"
 
 ListBase *SEQ_channels_displayed_get(Editing *ed)
 {
diff --git a/source/blender/sequencer/intern/disk_cache.cc b/source/blender/sequencer/intern/disk_cache.cc
index 0d4a8d42517..3eccdc03038 100644
--- a/source/blender/sequencer/intern/disk_cache.cc
+++ b/source/blender/sequencer/intern/disk_cache.cc
@@ -14,7 +14,6 @@
 
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
-#include "DNA_space_types.h" /* for FILE_MAX. */
 
 #include "IMB_colormanagement.hh"
 #include "IMB_imbuf.hh"
@@ -25,25 +24,17 @@
 #include "BLI_endian_switch.h"
 #include "BLI_fileops.h"
 #include "BLI_fileops_types.h"
-#include "BLI_ghash.h"
 #include "BLI_listbase.h"
-#include "BLI_mempool.h"
 #include "BLI_path_util.h"
 #include "BLI_threads.h"
 
 #include "BKE_main.hh"
-#include "BKE_scene.hh"
 
-#include "SEQ_prefetch.hh"
-#include "SEQ_relations.hh"
 #include "SEQ_render.hh"
-#include "SEQ_sequencer.hh"
 #include "SEQ_time.hh"
 
 #include "disk_cache.hh"
 #include "image_cache.hh"
-#include "prefetch.hh"
-#include "strip_time.hh"
 
 /**
  * Disk Cache Design Notes
diff --git a/source/blender/sequencer/intern/effects.cc b/source/blender/sequencer/intern/effects.cc
index 5df6db47de7..563ed818816 100644
--- a/source/blender/sequencer/intern/effects.cc
+++ b/source/blender/sequencer/intern/effects.cc
@@ -15,7 +15,6 @@
 #include "MEM_guardedalloc.h"
 
 #include "BLI_array.hh"
-#include "BLI_listbase.h"
 #include "BLI_math_rotation.h"
 #include "BLI_math_vector.hh"
 #include "BLI_math_vector_types.hh"
@@ -26,7 +25,6 @@
 #include "BLI_threads.h"
 #include "BLI_utildefines.h"
 
-#include "DNA_anim_types.h"
 #include "DNA_packedFile_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
@@ -45,7 +43,6 @@
 
 #include "BLI_math_color_blend.h"
 
-#include "RNA_access.hh"
 #include "RNA_prototypes.h"
 
 #include "RE_pipeline.h"
@@ -62,8 +59,6 @@
 
 #include "effects.hh"
 #include "render.hh"
-#include "strip_time.hh"
-#include "utils.hh"
 
 using namespace blender;
 
diff --git a/source/blender/sequencer/intern/image_cache.cc b/source/blender/sequencer/intern/image_cache.cc
index 0adffbb5cc6..5a8173096f5 100644
--- a/source/blender/sequencer/intern/image_cache.cc
+++ b/source/blender/sequencer/intern/image_cache.cc
@@ -19,30 +19,21 @@
 #include "IMB_imbuf.hh"
 #include "IMB_imbuf_types.hh"
 
-#include "BLI_blenlib.h"
-#include "BLI_endian_defines.h"
-#include "BLI_endian_switch.h"
-#include "BLI_fileops.h"
 #include "BLI_fileops_types.h"
 #include "BLI_ghash.h"
-#include "BLI_listbase.h"
 #include "BLI_mempool.h"
-#include "BLI_path_util.h"
 #include "BLI_threads.h"
 
 #include "BKE_main.hh"
-#include "BKE_scene.hh"
 
 #include "SEQ_prefetch.hh"
 #include "SEQ_relations.hh"
 #include "SEQ_render.hh"
-#include "SEQ_sequencer.hh"
 #include "SEQ_time.hh"
 
 #include "disk_cache.hh"
 #include "image_cache.hh"
 #include "prefetch.hh"
-#include "strip_time.hh"
 
 /**
  * Sequencer Cache Design Notes
diff --git a/source/blender/sequencer/intern/iterator.cc b/source/blender/sequencer/intern/iterator.cc
index b6c704b9740..b5c89e8708b 100644
--- a/source/blender/sequencer/intern/iterator.cc
+++ b/source/blender/sequencer/intern/iterator.cc
@@ -12,20 +12,14 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
-#include "BLI_ghash.h"
 #include "BLI_listbase.h"
-#include "BLI_set.hh"
-
-#include "BKE_scene.hh"
 
 #include "SEQ_iterator.hh"
 #include "SEQ_relations.hh"
 #include "SEQ_render.hh"
 #include "SEQ_time.hh"
-#include "render.hh"
 
 using blender::VectorSet;
 
diff --git a/source/blender/sequencer/intern/prefetch.cc b/source/blender/sequencer/intern/prefetch.cc
index cb0ccde167f..5b6b256d1b2 100644
--- a/source/blender/sequencer/intern/prefetch.cc
+++ b/source/blender/sequencer/intern/prefetch.cc
@@ -12,11 +12,9 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "DNA_anim_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_screen_types.h"
 #include "DNA_sequence_types.h"
-#include "DNA_windowmanager_types.h"
 
 #include "BLI_listbase.h"
 #include "BLI_threads.h"
@@ -26,12 +24,9 @@
 
 #include "BKE_anim_data.h"
 #include "BKE_animsys.h"
-#include "BKE_context.hh"
 #include "BKE_global.hh"
 #include "BKE_layer.hh"
-#include "BKE_lib_id.hh"
 #include "BKE_main.hh"
-#include "BKE_scene.hh"
 
 #include "DEG_depsgraph.hh"
 #include "DEG_depsgraph_build.hh"
diff --git a/source/blender/sequencer/intern/proxy.cc b/source/blender/sequencer/intern/proxy.cc
index f4d1dc6d7d7..fe771f3c9fd 100644
--- a/source/blender/sequencer/intern/proxy.cc
+++ b/source/blender/sequencer/intern/proxy.cc
@@ -10,7 +10,6 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "DNA_anim_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 #include "DNA_space_types.h"
@@ -18,7 +17,6 @@
 #include "BLI_fileops.h"
 #include "BLI_listbase.h"
 #include "BLI_path_util.h"
-#include "BLI_session_uid.h"
 #include "BLI_string.h"
 
 #ifdef WIN32
@@ -32,15 +30,12 @@
 #include "BKE_main.hh"
 #include "BKE_scene.hh"
 
-#include "DEG_depsgraph.hh"
-
 #include "WM_types.hh"
 
 #include "IMB_imbuf.hh"
 #include "IMB_imbuf_types.hh"
 #include "IMB_metadata.hh"
 
-#include "SEQ_iterator.hh"
 #include "SEQ_proxy.hh"
 #include "SEQ_relations.hh"
 #include "SEQ_render.hh"
@@ -51,7 +46,6 @@
 #include "proxy.hh"
 #include "render.hh"
 #include "sequencer.hh"
-#include "strip_time.hh"
 #include "utils.hh"
 
 struct SeqIndexBuildContext {
diff --git a/source/blender/sequencer/intern/proxy_job.cc b/source/blender/sequencer/intern/proxy_job.cc
index 96bf9ef1c8b..54a1aac1235 100644
--- a/source/blender/sequencer/intern/proxy_job.cc
+++ b/source/blender/sequencer/intern/proxy_job.cc
@@ -10,19 +10,11 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "BLI_blenlib.h"
-#include "BLI_ghash.h"
-#include "BLI_timecode.h"
-
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
 #include "BKE_context.hh"
-#include "BKE_global.hh"
-#include "BKE_main.hh"
-#include "BKE_report.hh"
 
-#include "SEQ_iterator.hh"
 #include "SEQ_proxy.hh"
 #include "SEQ_relations.hh"
 #include "SEQ_sequencer.hh"
@@ -30,8 +22,6 @@
 #include "WM_api.hh"
 #include "WM_types.hh"
 
-#include "RNA_define.hh"
-
 static void proxy_freejob(void *pjv)
 {
   ProxyJob *pj = static_cast<ProxyJob *>(pjv);
diff --git a/source/blender/sequencer/intern/render.cc b/source/blender/sequencer/intern/render.cc
index 89ca82d6977..46cbd67b2f8 100644
--- a/source/blender/sequencer/intern/render.cc
+++ b/source/blender/sequencer/intern/render.cc
@@ -12,7 +12,6 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "DNA_anim_types.h"
 #include "DNA_defaults.h"
 #include "DNA_mask_types.h"
 #include "DNA_scene_types.h"
@@ -48,7 +47,6 @@
 #include "IMB_imbuf_types.hh"
 #include "IMB_metadata.hh"
 
-#include "RNA_access.hh"
 #include "RNA_prototypes.h"
 
 #include "RE_engine.h"
@@ -72,7 +70,6 @@
 #include "prefetch.hh"
 #include "proxy.hh"
 #include "render.hh"
-#include "strip_time.hh"
 #include "utils.hh"
 
 #include <algorithm>
diff --git a/source/blender/sequencer/intern/sequence_lookup.cc b/source/blender/sequencer/intern/sequence_lookup.cc
index 3ddc4129426..4fca9d97e62 100644
--- a/source/blender/sequencer/intern/sequence_lookup.cc
+++ b/source/blender/sequencer/intern/sequence_lookup.cc
@@ -13,12 +13,9 @@
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
-#include "SEQ_iterator.hh"
-
 #include "BLI_ghash.h"
 #include "BLI_listbase.h"
 #include "BLI_map.hh"
-#include "BLI_string.h"
 #include "BLI_sys_types.h"
 #include "BLI_threads.h"
 #include "BLI_vector_set.hh"
diff --git a/source/blender/sequencer/intern/sound.cc b/source/blender/sequencer/intern/sound.cc
index 6a9300f855d..c76d4716a45 100644
--- a/source/blender/sequencer/intern/sound.cc
+++ b/source/blender/sequencer/intern/sound.cc
@@ -22,11 +22,7 @@
 #include "BLI_listbase.h"
 #include "BLI_utildefines.h"
 
-#include "BLO_read_write.hh"
-
 #include "BKE_colortools.hh"
-#include "BKE_main.hh"
-#include "BKE_scene.hh"
 #include "BKE_sound.h"
 
 #ifdef WITH_CONVOLUTION
diff --git a/source/blender/sequencer/intern/strip_add.cc b/source/blender/sequencer/intern/strip_add.cc
index 8df7d7ef491..d2b749465cd 100644
--- a/source/blender/sequencer/intern/strip_add.cc
+++ b/source/blender/sequencer/intern/strip_add.cc
@@ -22,9 +22,7 @@
 #include "BLI_listbase.h"
 #include "BLI_path_util.h"
 #include "BLI_string.h"
-#include "BLI_string_utf8.h"
 
-#include "BKE_context.hh"
 #include "BKE_image.h"
 #include "BKE_lib_id.hh"
 #include "BKE_main.hh"
@@ -45,7 +43,6 @@
 #include "SEQ_effects.hh"
 #include "SEQ_relations.hh"
 #include "SEQ_render.hh"
-#include "SEQ_select.hh"
 #include "SEQ_sequencer.hh"
 #include "SEQ_time.hh"
 #include "SEQ_transform.hh"
@@ -55,7 +52,6 @@
 #include "proxy.hh"
 #include "sequencer.hh"
 #include "strip_time.hh"
-#include "utils.hh"
 
 void SEQ_add_load_data_init(SeqLoadData *load_data,
                             const char *name,
diff --git a/source/blender/sequencer/intern/strip_edit.cc b/source/blender/sequencer/intern/strip_edit.cc
index e1f91080171..4a2fc80db80 100644
--- a/source/blender/sequencer/intern/strip_edit.cc
+++ b/source/blender/sequencer/intern/strip_edit.cc
@@ -18,13 +18,9 @@
 
 #include "BLT_translation.hh"
 
-#include "BKE_main.hh"
-#include "BKE_movieclip.h"
-#include "BKE_scene.hh"
 #include "BKE_sound.h"
 
 #include "strip_time.hh"
-#include "utils.hh"
 
 #include "SEQ_add.hh"
 #include "SEQ_animation.hh"
diff --git a/source/blender/sequencer/intern/strip_relations.cc b/source/blender/sequencer/intern/strip_relations.cc
index 460291e7160..a5ca653b80c 100644
--- a/source/blender/sequencer/intern/strip_relations.cc
+++ b/source/blender/sequencer/intern/strip_relations.cc
@@ -18,10 +18,8 @@
 
 #include "BKE_main.hh"
 #include "BKE_report.hh"
-#include "BKE_scene.hh"
 
 #include "DEG_depsgraph.hh"
-#include "DEG_depsgraph_query.hh"
 
 #include "IMB_imbuf.hh"
 
@@ -30,7 +28,6 @@
 #include "SEQ_relations.hh"
 #include "SEQ_sequencer.hh"
 #include "SEQ_time.hh"
-#include "SEQ_transform.hh"
 
 #include "effects.hh"
 #include "image_cache.hh"
diff --git a/source/blender/sequencer/intern/strip_retiming.cc b/source/blender/sequencer/intern/strip_retiming.cc
index 2817e063dff..3a063e300f6 100644
--- a/source/blender/sequencer/intern/strip_retiming.cc
+++ b/source/blender/sequencer/intern/strip_retiming.cc
@@ -18,30 +18,14 @@
 #include "BLI_span.hh"
 #include "BLI_vector.hh"
 
-#include "BKE_fcurve.h"
-#include "BKE_movieclip.h"
-#include "BKE_scene.hh"
 #include "BKE_sound.h"
 
-#include "DNA_anim_types.h"
-#include "DNA_sound_types.h"
-
-#include "IMB_imbuf.hh"
-
-#include "RNA_prototypes.h"
-
-#include "SEQ_channels.hh"
-#include "SEQ_iterator.hh"
-#include "SEQ_relations.hh"
-#include "SEQ_render.hh"
 #include "SEQ_retiming.hh"
 #include "SEQ_sequencer.hh"
 #include "SEQ_time.hh"
-#include "SEQ_transform.hh"
 
 #include "sequencer.hh"
 #include "strip_time.hh"
-#include "utils.hh"
 
 using blender::MutableSpan;
 
diff --git a/source/blender/sequencer/intern/strip_select.cc b/source/blender/sequencer/intern/strip_select.cc
index b3a13099ccb..808511a00b0 100644
--- a/source/blender/sequencer/intern/strip_select.cc
+++ b/source/blender/sequencer/intern/strip_select.cc
@@ -11,8 +11,6 @@
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
-#include "BKE_scene.hh"
-
 #include "SEQ_select.hh"
 #include "SEQ_sequencer.hh"
 
diff --git a/source/blender/sequencer/intern/strip_time.cc b/source/blender/sequencer/intern/strip_time.cc
index 5ea5d186180..a566e5acf17 100644
--- a/source/blender/sequencer/intern/strip_time.cc
+++ b/source/blender/sequencer/intern/strip_time.cc
@@ -16,21 +16,15 @@
 #include "BLI_listbase.h"
 #include "BLI_math_base.h"
 
-#include "BKE_fcurve.h"
 #include "BKE_movieclip.h"
-#include "BKE_scene.hh"
 #include "BKE_sound.h"
 
-#include "DNA_anim_types.h"
 #include "DNA_sound_types.h"
 
 #include "IMB_imbuf.hh"
 
-#include "RNA_prototypes.h"
-
 #include "SEQ_channels.hh"
 #include "SEQ_iterator.hh"
-#include "SEQ_relations.hh"
 #include "SEQ_render.hh"
 #include "SEQ_retiming.hh"
 #include "SEQ_sequencer.hh"
diff --git a/source/blender/sequencer/intern/strip_transform.cc b/source/blender/sequencer/intern/strip_transform.cc
index 2d7973557f0..0edc52a8ae0 100644
--- a/source/blender/sequencer/intern/strip_transform.cc
+++ b/source/blender/sequencer/intern/strip_transform.cc
@@ -17,10 +17,6 @@
 #include "BLI_math_vector.h"
 #include "BLI_math_vector_types.hh"
 
-#include "BKE_main.hh"
-#include "BKE_scene.hh"
-#include "BKE_sound.h"
-
 #include "SEQ_animation.hh"
 #include "SEQ_channels.hh"
 #include "SEQ_edit.hh"
@@ -34,8 +30,6 @@
 #include "sequencer.hh"
 #include "strip_time.hh"
 
-#include "CLG_log.h"
-
 bool SEQ_transform_single_image_check(Sequence *seq)
 {
   return (seq->flag & SEQ_SINGLE_FRAME_CONTENT) != 0;
diff --git a/source/blender/sequencer/intern/utils.cc b/source/blender/sequencer/intern/utils.cc
index 457f533db5f..456e2a0c2f8 100644
--- a/source/blender/sequencer/intern/utils.cc
+++ b/source/blender/sequencer/intern/utils.cc
@@ -14,7 +14,6 @@
 
 #include "MEM_guardedalloc.h"
 
-#include "DNA_mask_types.h"
 #include "DNA_scene_types.h"
 #include "DNA_sequence_types.h"
 
@@ -28,7 +27,6 @@
 #include "BKE_main.hh"
 #include "BKE_scene.hh"
 
-#include "SEQ_animation.hh"
 #include "SEQ_channels.hh"
 #include "SEQ_edit.hh"
 #include "SEQ_iterator.hh"