Teruo Oka is a Japanese screenwriter known for his work related to pink films. He was in charge of screenplays for Sakae Nitta's directorial works in the 1990s and 2000s. He has also written screenplays for other directors such as Yoshikazu Katō and Yutaka Ikejima. He also appears in films using the name Naoki Oka.

Filmography