Swimming at the 1948 Summer Olympics – Men's 1500 metre freestyle
The men's 1500 metre freestyle event at the 1948 Olympic Games took place between 5 and 7 August, at the Empire Pool. This swimming event used freestyle swimming, which means that the method of the stroke is not regulated. Nearly all swimmers use the front crawl or a variant of that stroke. Because an Olympic size swimming pool is 50 metres long, this race consists of 30 lengths of the pool.Medalists
Results
Heats
Semifinals
| Rank | Athlete | Country | Time | Notes |
| 1 | Jimmy McLane | | 19:52.2 | Q |
| 2 | John Marshall | | 19:53.8 | Q |
| 3 | György Mitró | | 20:06.5 | Q |
| 4 | György Csordás | | 20:06.6 | Q |
| 5 | Forbes Norris | | 20:09.3 | Q |
| 6 | Marjan Stipetić | | 20:12.9 | Q |
| 7 | Donald Bland | | 20:19.8 | q |
| 8 | Bill Heusner | | 20:23.9 | q |
| 9 | Jo Bernardo | | 20:25.5 | |
| 10 | Ferenc Vörös | | 20:31.4 | |
| 11 | Florbel Pérez | | 20:32.6 | |
| 12 | Miroslav Bartůšek | | 20:32.9 | |
| 13 | Luis González | | 20:41.6 | |
| 14 | Rolf Egon | | 20:44.6 | |
Key: Q = qualification by place in heat, q = qualification by overall placeFinal
