Masayuki Deai (出合 正幸, Deai Masayuki, January 21, 1981) is a Japanese actor from Osaka Prefecture. He is most famous for his portrayal of Eiji Takaoka in the tokusatsu series GoGo Sentai Boukenger.

His first on-screen appearance was as an extra in the 2003 American film, The Last Samurai.