| William Fajardo | |
| Birth Name: | William Ruy Fajardo Pérez |
| Birth Date: | 15 October 1929 |
| Birth Place: | Mérida, Yucatán, Mexico |
| Country: | Mexico |
| Sport: | Fencing |
| Show-Medals: | yes |
William Fajardo (15 October 1929 - 14 June 2002) was a Mexican épée, foil and sabre fencer. He competed at the 1960 and 1968 Summer Olympics.[1] Between 1954 and 1962, he won four bronze medals and a silver at the Central American and Caribbean Games.[2]