Masaki Usui (臼井 雅基, Usui Masaki) is a Japanese actor and voice actor. He attended Osaka Gakuin University and was affiliated with the Osaka TV Talent Bureau (TTB).
Usui is credited in several SNK games, especially those produced between the 1990s and the first half of the 2000s. Among the characters voiced by Usui are:
- Anúncio -
- Ryo Sakazaki - in the Art of Fighting series, Fatal Fury Special, The King of Fighters (94, XI, and XIII)
- John Crawley - from Art of Fighting
- Goro Daimon - The King of Fighters series ('94 and XIII)
- Karate Kenji - from Fight Fever
- Hanzo Hattori - in Samurai Shodown, Edge of Destiny, KOF: Maximum Impact 2 and the redubbed version of Samurai Shodown VI
- The Second Mr. Karate - in Buriki One, Fatal Fury: Wild Ambition, Neo Geo Battle Coliseum
- Haohmaru - Samurai Shodown (1 to 4, redub of SS 6), Neo Geo Battle Coliseum
- Earthquake - Samurai Shodown and SNK vs Capcom series
- Kuroko - Samurai Shodown 1 to 4
