Studio 4°C is a Japanese animation studio founded by Koji Morimoto, Eiko Tanaka , and Yoshiharu Sato in 1986. The name comes from the temperature at which water is at its most dense.

They are known marrying the spirit of independent festival animation with a more mainstream anime aesthetic. In addition much of their output is considered superflat with some artwork from Morimoto being featured at Takashi Murakami's exhibitions.

Works

Feature Films

• Memories (1995)
• Spriggan (1998)
• Princess Arete (2001)
• Mind Game (2004)
• Sachiko (2007 - Announced)

TV Series

• Eternal Family (1997)
• Urarochi Diamond (2000)
• Piroppo (2001)
• Tweeny Witches (2004)
• Kimagure Robot (2004)

Original Video Animation

• Noiseman Sound Insect (1997)
• The Animatrix (2003)

Music Videos

• Ken Ishii - Extra (1996)
• The Bluetones - Four Day Weekend (1998)
• Glay - Survival (1999)
• Ayumi Hamasaki - Connected (2002)

Short Films

• Aerial Bar (2000)
• Chicken's Insurance (2001)
• In the Evening of a Moonlit Night (2001)
• Table and Fishman (2001)
• Comedy (2001)
• Professor Dan Petory's Blues (2002)
• End of the World (2002)