Masahiro "Massy" Kuramoto (倉本昌弘, Kuramoto Masahiro?, born 9 September 1955) is a Japanese professional golfer.
Kuramoto was born in Hiroshima Prefecture. He turned professional in 1981. He has won 30 tournaments on the Japan Golf Tour, ranking fifth on the career list. He ranks seventh on the career money list with earnings of just over 1 billion ¥.
Kuramoto won the 1992 PGA Tour qualifying school and played full-time on the Tour in 1993. He played 65 times on the PGA Tour from 1978 to 1997. His best finish was a T-4 at the 1982 British Open (also his best finish in a major championship).
In 2005, he won the Champions Tour qualifying school, and he began play on that tour in 2006. His best finish is a fourth place finish in the 2006 Wal-Mart First Tee Open at Pebble Beach.