Johnny Mayes (born 29 April 1947) is an Australian former rugby league halfback who represented Australia in the 1975 World Cup.
Mayes had a slow start to his career with Eastern Suburbs owing to competition from established 1967–68 Kangaroo tour half Kevin Junee.
Being a similar type of halfback to Junee, Mayes naturally sought another club to be sure of a first grade berth and Manly, with Dennis Ward dropping out, picked him up for the 1973 season.
However, with Junee's return to Easts and the unexpected emergence of the relatively unknown Kevin Hastings, Mayes spent much of 1976 in reserve grade again despite actually being the incumbent Australian test halfback.
During the 1976 season, Mayes played in Easts victory in their unofficial 1976 World Club Challenge match against reigning British champions St. Helens at the Sydney Cricket Ground.