Shin Ōnuma (大沼 心 Ōnuma Shin, born March 8, 1976) is a Japanese anime and theatre director. He has also provided key animation for many anime. Most prominently he has directed Ef: A Tale of Memories. He was previously working with Shaft alongside Akiyuki Shinbo until the end of 2009, and is currently employed by Silver Link as the studio's most prominent director