| 1948 NCAA swimming and diving championships | |
| Hostcity: | Ann Arbor, Michigan |
| Dates: | March 1948 |
| Venues: | Intramural Sports Building University of Michigan |
| Teams: | 16 |
| Events: | 11 |
| Previous: | 1947 |
| Next: | 1949 |
The 1948 NCAA swimming and diving championships were contested in March 1948 at the Intramural Sports Building at the University of Michigan in Ann Arbor, Michigan at the 12th annual NCAA-sanctioned swim meet to determine the team and individual national champions of men's collegiate swimming and diving among its member programs in the United States.
Hosts Michigan topped three-time defending champions, and rivals, Ohio State in the team standings, capturing the Wolverines' sixth national title.[1]
| Michigan (H) | 44 | |
| Ohio State (DC) | 41 | |
| 21 | ||
| 20 | ||
| 16 | ||
| 14 | ||
| 10 | ||
| Northwestern | ||
| 7 | ||
| Purdue | ||
| 4 | ||
| 3 | ||
| Temple | 2 | |
| 1 | ||
| Penn | ||
| Texas |
| 50-yard freestyle | Stanford | 23.3 | ||
| 100-yard freestyle | Iowa | 51.5 | ||
| 220-yard freestyle | Ohio State | 2:09.5 | ||
| 440-yard freestyle | Ohio State | 4:43.8 | ||
| 1,500-meter freestyle | Northwestern | 19:28.2 | ||
| 150-yard backstroke | Yale | 1:31.8 | ||
| 200-yard butterfly | La Salle | 2:14.7 | ||
| 400-yard freestyle relay | Michigan State | 3:31.0 | ||
| 300-yard medley relay | Michigan (DC) | 2:54.9 |
| One-meter diving | Ohio State | 163.87 | |||
| Three-meter diving | Miller Anderson (DC) | Ohio State | 174.34 |