One Piece Anime Filler List
So far with more than 1000 episodes in total in this ongoing anime. It is a lot of time to be invested. There are certain episodes added in an anime that does not carry the story any further. These episodes are called Filler episodes.
Compared to anime Like Naruto, One Piece has a lower filler percentage of 9%. There are in total 90+ filler episodes as of Yet.
One Piece follows the story of Monkey D. Luffy, who is set on an adventure. Along the way, many new crew mates join him in his journey to become The King of The Pirates.
Here is the List of Filler Episodes and arcs that are termed to be Fillers.
Warship Island arc [54-61]
(54) Precursor to a New Adventure Apis, a Mysterious Girl
(55) Miraculous Creature! Apis Secret and the Legendary Island
(56) Eric Attacks! Great Escape From Warship Island!
(57) A Solitary Island in the Distant Sea! The Legendary Lost Island
(58) Showdown in the Ruins! Tense Zoro vs. Eric!
(59) Luffy, Completely Surrounded! Commodore Nelson’s Secret Strategy!
(60) Through the Sky They Soar! The 1000-Year Legend Lives Again!
This arc follows a girl named Apis who escaped from Marine branch 8. Strawhats find her and decide to take her back to her hometown. It is later discovered that Apis had Devil fruit powers. She could talk to animals.
The path is not easy as Branch 8’s captain sends mercenaries after Apis.
Enter the Desert Pirates! The Men Who Live Freely! 
Ace gets lost in the desert. Nami and Vivi travel in the desert. Luffy and the rest of the members find Barber Pirates in their way.
False Fortitude! Camu, Rebel Soldier at Heart 
A village is being guarded by fake bodyguards. Vivi asks Luffy to test if they have other intentions.
Ruins and Lost Ways! Vivi, Her Friends, and the Country’s Form! 
Luffy eats a cactus and goes on a rampage. Zoro, Luffy, and Chopper find ruins in the desert.
Post Arabasta arc [131-135]
(131) The First Patient! The Untold Story of the Rumble Ball!
(132) Uprising of the Navigator! For the Unyielding Dream!
(133) A Recipe Handed Down! Sanji, the Iron Man of Curry!
(134) I Will Make it Bloom! Usopp the Man and the Eight-Foot Shell!
(135) The Fabled Pirate Hunter! Zoro, the Wandering Swordsman!
The five episodes in this arc focus on different characters, their lives, and their ambitions.
Goat Island arc [136-138]
(136) Zenny of the Island of Goats and the Pirate Ship in the Mountains
(137) How’s Tricks? The Design of Zenny the Moneylender!
(138) Whereabouts of the Island Treasure! Attack of the Zenny Pirates!
The crew was escaping the Marines and they land on an island full of goats. On the island, they meet a man named Zenny. The crew discovers that Zenny has only three days to live.
The crew helps Zenny with his daily chores. Zenny is trying to build his own grave but actually wanted to build a pirate ship. Nami thinks that he has some hidden treasure.
Ruluka Island arc [139-143]
(139) Legend of the Rainbow Mist! Old Man Henzo of the Luluka Island!
(140) Residents of the Land of Eternity! The Pumpkin Pirates!
(141) Thoughts of Home! The Pirate Graveyard of No Escape!
(142) An Inevitable Melee! Wetton’s Schemes and the Rainbow Tower!
(143) And so, the Other Side of the Rainbow
Straw hats are being chased by Marines. To escape, straw hats enter Raluka Island. The island is ruled by a dictator, who overtaxed his people. He has also ordered to build the Rainbow tower.
G-8 arc [196-206]
(196) A State of Emergency is Issued! A Notorious Pirate Ship has Infiltrated!
(197) Sanji the Cook! Proving His Merit at the Marine Dining Hall!
(198) Captured Zoro! Chopper’s Emergency Operations!
(199) The Marine’s Dragnest Closes In! The Second Member Captured!
(200) Luffy and Sanji’s Daring Rescue Mission!
(201) Enter the Hot-Blooded Special Forces! Battle on the Bridge!
(202) Breaking Through the Seige! The Going Merry is Recovered!
(203) The Pirate Ship Disappears! Fortress Battle, Round #2!
(204) The Gold and Waver Recovery Operations!
(205) The One Fell Swoop Plan! Jonathan’s Surefire Secret Tactic!
(206) Farewell, Marine Fortress! The Last Battle foe Escape!
Going Merry is trapped in the middle of the G-8 marine base. The crew tries to escape and spreads in all different directions.
Ocean’s Dream arc [220-224]
(220) Was it Lost? Stolen? Who are You?
(221) A Mysterious Boy With a Horn and Robin’s Deduction!
(222) Now, Let’s Get Back Our Memories! The Pirate Crew Lands on the Island!
(223) Zoro Bares His Fangs! A Savage Animal Stands in the Way!
(224) The Last Counterattack by the Memory Thief Who Reveals His True Colors!
(225) Proud Man! Silver Fox Foxy!
(226) The Guy Who’s the Closest To Invincible? And the Most Dangerous Man!
The crew’s memory gets affected when they hear a mysterious boy playing a flute.
Jump Towards the Falls! Luffy’s Feelings! 
Shanks is the center of attention in this filler arc. The crew is attacked by bandits and Shanks comes to their rescue.
Report Time 
The episode shows how the crew had their food before Sanji joined the Straw Hats.
A Bond of Friendship Woven by Tears! Nami’s World Map! 
This episode shows how Nami joins Arlong’s pirate crew and her memories there. It also shows how her relationship with Luffy and Robin has changed over time.
Parting Builds a Man’s Character! Sanji and Chopper! 
The back stories of Sanji and Chopper are shown.
Everything is for Her Friends! Robin in the Darkness! 
In this episode back story of Robin is shown. The reason why she joined CP9 is revealed.
Boss Luffy Returns! Is it a Dream or Reality? Lottery Ruckus! 
Set in an alternate reality of Feudal Japan. In this episode, Buggy kidnaps Rika and Luffy comes to the rescue
A Big Rice Cake Tossing Race at the Castle! Red Nose’s Plot! 
The adventures continue in an alternate reality of Feudal Japan.
Boss Luffy is the Culprit? Track Down the Missing Great Cherry Tree! 
It is the Sakura blooming season and one sakura tree gets missing. Usopp doubts it is Luffy that stole it.
The Girl in Search of Her Yagara! Great Search in the City of Water! 
A young girl loses her pet. Luffy and Chopper seeing her condition, help her track it down.
Mothers are Strong! Zoro’s Hectic Household Chores! 
Zoro is in search of a new Katana.
He meets two kids named Michael and Hoichael who help him in finding a sword shop and call him big brother.
Sanji’s Shock! Mysterious Old Man and His Super Yummy Cooking! 
Sanji takes Chimeney and Gonbe to a floating restaurant owned by an old man. The old man reveals himself to be a friend of Sanji’s Master.
Ice Hunter arc [326-335]
(326) The Mysterious Band of Pirates! Sunny and the Dangerous Trap!
(327) Sunny in a Pinch! Roar, Secret Superspeed Mecha!
(328) The Dream Sinking in the New World! The Disillusioned Pirate, Puzzle!
(329) The Assassins Attack! The Great Battle on Ice Begins!
(330) The Straw Hat’s Hard Battles! A Pirate Soul Risking it All for the Flag
(331) Hot Full Throttle! The Twin’s Magnetic Power Drawing Near!
(332) Mansion of Great Chaos! The Enlarged Don and the Captured Crew!
(333) The Return of the Phoenix! The Dream of the Pirate Flag Sworn to a Friend!
(334) The Red Hot Decisive Battle! Luffy vs the Scorching Don!
(335) Waiting in the New World! Farewell to the Brave Pirates!
(336) Chopperman to the Rescue! Protect the TV Station by the Shore!
Luffy, Zoro, and Sanji fight a bounty hunter group. Luffy fights against the Dad of the Bounty hunter family whose power is to turn his body hotter than lava.
Spa Island arc [382-384]
It takes place after the Thriller Bark arc. The crew is on an artificial island. There they meet Lina and Sayo, with their pet raccoon. They are attacked by the Foxy Pirates but Luffy manages to save everyone.
The sisters in return give the crew the Rainbow Gem.
Little East Blue arc [426-429]
Straw Hat Pirates are attacked by a Beetle while they were fishing. The Bettle captures some of the crew and takes them to a town named Little East Blue. The Town knows the crew and some even admire them.
Amigo Pirates, Corto, and Largo attack the crew. Luffy, Zoro, and Sanji deal with them.
Z’s Ambition arc [575-578]
The crew gets struck by a large storm. After the storm ends they find themselves in The New World.
Caesar Retrieval arc [626-628]
Caesar is captured by Breed. Law, Luffy, and Copper fight animals controlled by Breed to rescue Caesar.
Sivel Mine arc [747-750]
The Silver Pirate alliance captures Luffy and Bartolomeo. This filler arc shows them trying to escape from a large fortress.
Marine Rookie arc [780-782]
The crew tries to rescue Sanji from Whole Cake Island.
Crew’s ration gets over and they sneak into a Marine base to get some food.
Cidre Guild [895-896]
Luffy and Hancock are up against Cidre Guild.
Other Filler Episodes
406-407, 418-420, 453-456, 457-458, 492, 497-499, 506-542, 590, 737, 775, 907.
Beware of other Fillers:
Naruto Shippuden: https://animeloved.com/blog/naruto-shippuden-anime-filler-list/
Black Clover: https://animeloved.com/blog/black-clover-anime-filler-list/