Jo Maso (born 27 December 1944) is a French former rugby league and rugby union footballer who played in the 1960s, 1970s and 1980s.

He played centre and fly-half for the France national rugby union team, gaining 25 caps.

He was inducted into the International Rugby Hall of Fame in 2003.

He played club rugby for Narbonne, Toulonnais and Perpignan.

He also toured Australia, New Zealand and South Africa with the national side, and played three times for the Barbarians.