Masayuki Toyoshima (?? ??, Masayuki Toyoshima, born April 30, 1990) is a Japanese professional shogi player, ranked 9-dan.
He is the current holder of the Meijin and Ryuo titles, and a former holder of the Oi and Kisei titles.
Toyoshima, together with Akira Inaba, Tetsuro Itodani and Akihiro Murata, is one of four Kansai-based young shogi professionals who are collectively referred to as the Big Young Kansai Four (???????, Kansai Wakate Shitenno).