Anime Starting with O

Browse anime titles starting with letter O on 9Anime. Complete A-Z anime directory.

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One Piece in Love2025Ep 5

One Piece in Love

ONA 6.7
One Room2020Ep 12

One Room

TV 6.4
One Week Friends2014Ep 12

One Week Friends

TV 7.5
One: Kagayaku Kisetsu e2001Ep 4

One: Kagayaku Kisetsu e

OVA 5.3
Onegai AiPri2026Ep 30

Onegai AiPri

TV 6.1
Onegai My Melody2006Ep 52

Onegai My Melody

TV 7.4
ONI: Thunder God's Tale2022Ep 4

ONI: Thunder God's Tale

ONA 7.1
Onigiri2016Ep 13

Onigiri

TV 5.3
Onihei2017Ep 1

Onihei

OVA 6.4
ONIMAI: I'm Now Your Sister!2023Ep 12

ONIMAI: I'm Now Your Sister!

TV 7.6
Onimusha2023Ep 8

Onimusha

ONA 6.6
Onipan!2022Ep 60

Onipan!

TV 6.5
Onmyo Kaiten Re:Birth Verse2025Ep 12

Onmyo Kaiten Re:Birth Verse

TV 6.5
Onmyou Taisenki2004Ep 52

Onmyou Taisenki

TV 7.1
Ontama!2009Ep 5

Ontama!

ONA 6.6
Opus.COLORs2023Ep 12

Opus.COLORs

TV 5.7
Orange2016Ep 1

Orange

Movie 7.5
Ore wa Teppei1977Ep 28

Ore wa Teppei

TV 6.8
Oreimo2013Ep 13

Oreimo

TV 6.9
Oreshura2013Ep 13

Oreshura

TV 6.9
ORESUKI Are you the only one who loves me?2020Ep 1

ORESUKI Are you the only one who loves me?

OVA 7.6
Oretacha Youkai NingenEp 1

Oretacha Youkai Ningen

TV
Orient2022Ep 12

Orient

TV 7.0
Orphen1999Ep 23

Orphen

TV 6.8
Oruchuban Ebichu1999Ep 24

Oruchuban Ebichu

TV 7.4
Osamake: Romcom Where the Childhood Friend Won't Lose2021Ep 12

Osamake: Romcom Where the Childhood Friend Won't Lose

TV 6.1
Osomatsu-kun1989Ep 1

Osomatsu-kun

Movie 6.0
Otaku Elf2023Ep 12

Otaku Elf

TV 7.3
Otaku no Video1991Ep 2

Otaku no Video

OVA 7.1
Otherside Picnic2021Ep 12

Otherside Picnic

TV 6.7
Otoboku: Maidens are Falling for Me2022Ep 1

Otoboku: Maidens are Falling for Me

OVA 5.5
Otogi Zoshi: The Legend of Magatama2004Ep 26

Otogi Zoshi: The Legend of Magatama

TV 7.0
Our Dating Story: The Experienced You and the Inexperienced Me2023Ep 12

Our Dating Story: The Experienced You and the Inexperienced Me

TV 6.8
Our Home's Fox Deity2008Ep 24

Our Home's Fox Deity

TV 7.2
Our Last Crusade or the Rise of a New World2024Ep 12

Our Last Crusade or the Rise of a New World

TV 6.8
Our Love Has Always Been 10 Centimeters Apart.Ep 6

Our Love Has Always Been 10 Centimeters Apart.

TV