| Event: | Wheelchair tennis – Men's singles |
| Games: | 2004 Summer |
| Venue: | Athens Olympic Tennis Centre |
| Dates: | 19–26 September 2004 |
| Gold: | Robin Ammerlaan |
| Goldnpc: | NED |
| Silver: | David Hall |
| Silvernpc: | AUS |
| Bronze: | Michaël Jérémiasz |
| Bronzenpc: | FRA |
| Prev: | 2000 |
| Next: | 2008 |
| Type: | quad |
| Quadrennial: | yes |
| Multiwc: | yes |
The men's singles wheelchair tennis competition at the 2004 Summer Paralympics in Athens was held from 19 September to 26 September at the Athens Olympic Tennis Centre.
The Netherlands' Robin Ammerlaan defeated the defending gold medalist David Hall of Australia in the final, 6–2, 6–1 to win the gold medal in men's singles wheelchair tennis at the 2004 Athens Paralympics. In the bronze medal match, France's Michaël Jérémiasz defeated the United States' Stephen Welch.