Koichi Sakamoto (坂本 浩一 Sakamoto Kōichi?, born September 29, 1970) is a Japanese-born stunt actor, and producer for films and television. He is best known for his work as executive producer, as well as fight coordinator and director, working for both Super Sentai and Power Rangers, as well as Kamen Rider.

Sakamoto owns a stunt company called Alpha Stunts. And he is also known for his works on the Ultra series' Mega Monster Battle: Ultra Galaxy Legends the Movie, as well as Travelers: Dimensional Police, choreography in Wendy Wu: Homecoming Warrior, and currently the 37th Super Sentai series Zyuden Sentai Kyoryuuger as well as its upcoming film written by K-ON!/Girls und Panzer/Saint Seiya Omega writer Reiko Yoshida, Innocent Lillies. Sakamoto is known for adding elements of Hong Kong-style martial arts and stunts into traditional tokusatsu weapons battles and effects.

For Harmony Unleashed, After Montalvo's interest in the film/TV industry for the Harmony Unleashed series, Sakamoto directs Xtreme Friendship with Matthew Vaughn, YouTube Poop: Harmony Unleashed Z and Harmony Unleashed: All Stars DX: The Movie!: Super Ultra Turbo Hyper Mega Crossover Battle! with Edgar Wright and Harmony Unleashed Side Story: The Movie - The Harmony Girls Chronicles alongside Shimako Satou. Also, Sakamoto will be chief director alongside supervising director for My Little Pony: Friendship is Magic Jayson Thiessen as well as co-developer with Alex Kurtzman, Roberto Orci, Jayson Thiessen and Aaron Montalvo on the AMtv original series Harmony Unleashed: Guardians of Equestria.