| 1955 NCAA swimming and diving championships | |
| Hostcity: | Oxford, Ohio |
| Dates: | March 1955 |
| Venues: | Billings Natatorium Miami University |
| Teams: | 23 |
| Events: | 14 |
| Previous: | 1954 |
| Next: | 1956 |
The 1955 NCAA swimming and diving championships were contested in March 1955 at Billings Natatorium at Miami University in Oxford, Ohio at the 19th 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.[1]
Ohio State retained the national title, the Buckeyes' ninth, after finishing thirty-nine points ahead of Michigan and Yale in the team standings.
| Ohio State (DC) | 90 | |
| 51 | ||
| Yale | ||
| 20 | ||
| 17 | ||
| 15 | ||
| 14 | ||
| Oklahoma | ||
| 13 | ||
| 11 | ||
| 9 | ||
| 8 | ||
| 5 | ||
| Purdue | ||
| Springfield | ||
| 4 | ||
| 3 | ||
| 2 | ||
| Cornell | ||
| La Salle | ||
| USC | ||
| Ohio | 1 | |
| Wisconsin |
| 50 yard freestyle | Yale | 22.8 | ||
| 100 yard freestyle | Yale | 50.7 | ||
| 220 yard freestyle |  Jack Wardrop (DC) | Michigan | 2:04.2 | |
| 440 yard freestyle | Ford Konno (DC) | Ohio State | 4:31.1 | |
| 1,500 meter freestyle | Ford Konno (DC) | Ohio State | 18:16.1 | |
| 100 yard backstroke | Yoshi Oyakawa (DC) | Ohio State | 58.0 | |
| 200 yard backstroke | Yoshi Oyakawa (DC) | Ohio State | 2:07.7 | |
| 200 yard breaststroke | NC State | 2:26.0 | ||
| 200 yard butterfly | North Carolina | 2:13.7 | ||
| 150 yard individual medley | Ohio State | 1:26.5 | ||
| 400 yard freestyle relay | Yale | 3:24.9 | ||
| 300 yard medley relay | Ohio State (DC) | 2:42.2 |
| 1 meter diving | Fletcher Gilders (DC) | Ohio State | 535.05 | |
| 3 meter diving | Ohio State | 590.25 |