Fumitoshi Oizaki

is a Japanese animator, character designer, storyboard artist and director. He is primarily associated with Gonzo, which animated his series directorial debut, Romeo × Juliet, and with Sunrise, where he served as series character designer of the Sgt. Frog franchise. He is a member of the Japan Animation Creators Association (JAniCA) labor group.

Works Television series His and Her Circumstances (1998–1999: episode key animator) Now and Then, Here and There (1999–2000: episode key animator) Final Fantasy: Unlimited (2001; animation director) Prétear (2001: episode director (episode 11)) Kaleido Star (2003: character design (with Hajime Watanabe), chief animation director, animation director (episodes 1, 26), key animator (episodes 1, 3, 17)) Sgt. Frog (2004: character design, animation supervision) Welcome to the N.H.K. (2004: animation director, storyboard artist (ending credits sequence 1, Pururin opening credits)) Romeo × Juliet (2007: director) Astarotte no Omocha! (2011; director) Place to Place (2012: director) Etotama (2015: director) Aokana: Four Rhythm Across the Blue (2016: director) A Centaur's Life (2017: chief director) Merc Storia: The Apathetic Boy and the Girl in a Bottle (2018: director, series composition) Deaimon (2022: director) Chillin' in My 30s After Getting Fired from the Demon King's Army (2023: director) Akuma-kun (2023: director) The Gorilla God's Go-To Girl (2025: director) The Daily Life of a Part-time Torturer (2026: director)

Original video animation (OVA) Gate Keepers 21 (2002–2003: episode director) Re: Cutie Honey (2004: key animator (episode 3)) Kaleido Star: New Wings Extra Stage - The Amazing Princess Without a Smile (2004: character designer, chief animation director) Kaleido Star: Legend of Phoenix ~Layla Hamilton Story~ (2005; character designer, chief animation Director) Kaleido Star: Kaleido Star: Good dayo! Goood!! (2006: character designer)

Original net animation (ONA) Etotama ~Nyan-Kyaku Banrai~ (2021: director)

Theatrical films Princess Arete (2001: key animator) Mind Game (2004: key animator) Sgt. Frog the Super Movie (2006: character design, chief animation director) Sgt. Frog the Super Movie 2: The Deep Sea Princess (2007: character design, chief animation director) Afro Samurai: Resurrection (2009: key animator) Shin Gekijōban Keroro Gunsō: Fukkatsu Shite Sokkō Chikyū Metsubō no Kiki de Arimasu! (2026: director)