| Gordon Chalmers | |
| Birth Date: | 24 February 1911 |
| Birth Place: | Cranford, New Jersey, U.S. |
| Death Place: | Hendersonville, North Carolina, U.S. |
| Player Sport1: | Swimming |
| Player Team2: | Franklin & Marshall |
| Player Sport3: | Soccer |
| Player Years4: | c. 1931–1935 |
| Player Team4: | Franklin & Marshall |
| Player Positions: | Quarterback |
| Coach Sport1: | Swimming |
| Coach Years2: | 1940–1941 |
| Coach Team2: | Lafayette |
| Coach Years3: | 1941–1942 |
| Coach Team3: | Lehigh |
| Coach Years4: | 1944–1946 |
| Coach Team4: | Lehigh |
| Coach Years5: | 1947–1959 |
| Coach Team5: | Army |
| Admin Years1: | 1959–1966 |
| Admin Team1: | Iowa State |
| Admin Years2: | 1967–1973 |
| Admin Team2: | Indiana State |
Gordon H. "Slim" Chalmers (February 24, 1911 – January 18, 2000) was an American swimmer, swimming coach, and college athletics administrator. He competed in the men's 100 metre backstroke at the 1932 Summer Olympics.[1] He served as the athletic director at Iowa State University from 1959 to 1966 and at Indiana State University from 1967 to 1973
A resident of East Orange, New Jersey, Chalmers won the title in the 100-yard backstroke at the national interscholastic aquatic champions at Columbia University in March 1930, leading East Orange High School to a second-place team finish.[2]