One Piece, like most prominent anime, has a mix of filler and canon episodes, though the former is relatively much lower in quantity. Out of the 1072 episodes in the famed anime, around 95 can be considered strictly non-canonical.
Here is a list of all such episodes in One Piece.
List of all One Piece filler arcs, including episode numbers
East Blue Saga
- Romance Dawn Arc: Episodes 1 to 3
- Orange Town Arc: Episodes 4 to 8
- Syrup Village Arc: Episodes 9 to 18
- Baratie Arc: Episodes 19 to 30
- Arlong Park Arc: Episodes 31 to 45
- Buggy Side Story Arc: Episodes 46 to 47
- Loguetown Arc: Episodes 48 to 53
East Blue Filler Arcs and Episodes
- Warship Island Arc: Episodes 54 to 60
Alabasta Saga
- Reverse Mountain Arc: Episodes 62 to 63
- Whiskey Peak Arc: Episodes 64 to 67
- Koby and Helmeppo Arc: Episodes 68 to 69
- Little Garden Arc: Episodes 70 to 77
- Drum Island Arc: Episodes 78 to 91
- Alabasta Arc: Episodes 92 to 130
Alabasta Filler Arcs and Episodes
- Filler Episodes: Episodes 98 to 99, 102
- Post-Alabasta Arc: Episodes 131 to 135
Sky Island Saga
- Jaya Arc: Episodes 144 to 152
- Skypiea Arc: Episodes 153 to 195
Sky Island Filler Arcs and Episodes
- Goat Island Arc: Episodes 136 to 138
- Ruluka Island Arc: Episodes 139 to 143
- G-8 Arc: Episodes 196 to 206
Water 7 Saga
- Long Ring Long Land Arc: Episodes 207 to 219
- Water 7 Arc: Episodes 227 to 263
- Enies Lobby Arc: Episodes 264 to 312
- Post-Enies Lobby Arc: Episodes 313 to 325
Water 7 Filler Arcs and Episodes
- Ocean’s Dream Arc: Episodes 220 to 224
- Foxy’s Return Arc: Episodes 225 to 226
- Filler Episodes: 279 to 283, 291 to 292, 303, 317 to 319
Thriller Bark Saga
- Thriller Bark Arc: Episodes 337 to 381
Thriller Bark Filler Arcs and Episodes
- Ice Hunter Arc: Episodes 326 to 336
- Spa Island Arc: Episodes 382 to 384
Summit War Saga
- Sabaody Archipelago Arc: Episodes 385 to 405
- Amazon Lily Arc: Episodes 408 to 421
- Impel Down Arc Part 1: Episodes 422 to 425
- Impel Down Arc Part 2: Episodes 430 to 456
- Marineford Arc: Episodes 457 to 489
- Post-War Arc: Episodes 490 to 516
Summit War Filler Arcs and Episodes
- Filler: Episodes 406 to 407, 457 to 458, 492
- Little East Blue Arc: Episodes 426 to 429
Fish-Man Island Saga
- Return to Sabaody Arc: Episodes 517 to 522
- Fish-Man Island Arc: Episodes 523 to 574
Fish-Man Island Filler Arcs and Episodes
- Filler: Episode 542
Dressrosa Saga
- Punk Hazard Arc: Episodes 579 to 625
- Dressrosa Arc: Episodes 629 to 746
Dressrosa Filler Arcs and Episodes
- Z’s Ambition Arc: Episodes 575 to 578
- Filler: Episode 590
- Caesar Retrieval Arc: Episodes 626 to 628
Whole Cake Island Saga
- Zou Arc: Episodes 751 to 779
- Whole Cake Island Arc: Episodes 783 to 877
- Reverie Arc: Episodes 878 to 889
Whole Cake Island Filler Arcs and Episodes
- Silver Mine Arc: Episodes 747 to 750
- Marine Rookie Arc: Episodes 780 to 782
Wano Country Saga
- Wano Country Arc Part 1: Episodes 890 to 894
- Wano Country Arc Part 2: Episodes 897 to 1028
- Wano Country Arc Part 3: Episodes 1031 to 1072 (and counting)
Wano Country Filler Arcs and Episodes
- Cidre Guild Arc: Episodes 895 to 896
- Romance Dawn: Episode 907
- Uta’s Past: Episodes 1029 to 1030
Though all these are skippable, the G-8 arc is highly recommended by most fans and is considered a very high-quality filler arc. The Z’s Ambition Arc is also recommended for those planning to watch One Piece Film: Z.
