Guillermo Mac Millan | |
|---|---|
| Born | 1940 or 1941 (age 82–83) |
| Nationality | Chilean |
| Alma mater | University of Chile |
| Occupation | Urologist |
| Years active | 1976-2019 |
| Employer | Van Buren Hospital |
| Known for | Sex reassignment surgery |
Guillermo Mac Millan (born 1940/1941) is a retired Chilean urologist who worked at Van Buren Hospital in Valparaíso. He carried out sex reassignment surgery on hundreds of patients over the course of his career.