Joaquín Loyo-Mayo
| Country (sports) | Mexico | 
|---|---|
| Born | August 16, 1945 Veracruz, Mexico  | 
| Died | December 27, 2014 (aged 69) Córdoba, Veracruz, Mexico  | 
| Turned pro | 1969 (ILTF World Circuit from 1961) | 
| Retired | 1982 | 
| Plays | Left-handed | 
| Singles | |
| Career record | 292–229 | 
| Career titles | 21 | 
| Highest ranking | No. 99 (April 5, 1976) | 
| Grand Slam singles results | |
| Australian Open | 2R (1975) | 
| French Open | 3R (1970) | 
| Wimbledon | 4R (1971) | 
| US Open | 3R (1965, 1968, 1969) | 
| Doubles | |
| Career record | 36–86 | 
| Highest ranking | No. 91 (March 1, 1976) | 
Joaquín Loyo-Mayo (August 16, 1945 – December 27, 2014) was a Mexican tennis player active from 1961 to 1982; he won 21 career singles titles.