| Event: | Men's indoor singles tennis |
| Games: | 1912 Summer |
| Dates: | 5–12 May 1912 |
| Competitors: | 25 |
| Nations: | 6 |
| Gold: | André Gobert |
| Goldnoc: | FRA |
| Silver: | Charles Dixon |
| Silvernoc: | GBR |
| Bronze: | Anthony Wilding |
| Bronzenoc: | ANZ |
| Prev: | 1908 |
| Type: | olympics1912 |
| Quadrennial: | yes |
| Multi: | yes |
| After Year: | 1920 |
The indoor men's singles competition at the 1912 Summer Olympics was part of the tennis program for the games.