Jean Washer
| Full name | Jean Marie Octave Constant Washer |
|---|---|
| Country (sports) | Belgium |
| Born | 22 August 1894 Berchem, Antwerp, Belgium |
| Died | 23 March 1972 (aged 77) Geneva, Switzerland |
| Plays | Left-handed (one-handed backhand) |
| Singles | |
| Career record | 15–7 |
| Highest ranking | No. 9 (1923, A. Wallis Myers) |
| Grand Slam singles results | |
| French Open | SF (1925) |
| Wimbledon | QF (1924) |
| US Open | 3R (1927) |
| Other tournaments | |
| WHCC | F (1921, 1923) |
| Team competitions | |
| Davis Cup | QF (1921) |
Jean Marie Octave Constant Washer (French pronunciation: [ʒɑ̃ waʃe]; 22 August 1894 – 23 March 1972) was a Belgian tennis player successful in the 1920s. He was the father of Philippe Washer.