| Gene N. Lebrun | |
| Office3: | Member of the South Dakota House of Representatives |
| Term3: | 1971 - 1974 |
| Office4: | Speaker of the South Dakota House of Representatives |
| Term4: | 1973–1974 |
| Preceded4: | Donald E. Osheim |
| Succeeded4: | Joseph H. Barnett |
| Birth Date: | 4 July 1939 |
| Birth Place: | Langdon, North Dakota |
| Party: | Democratic |
| Profession: | Lawyer |
Gene N. Lebrun (July 4, 1939 – July 23, 2023)[1] was an American politician in the state of South Dakota. He was a member of the South Dakota State House of Representatives.[2] Lebrun attended the College of Saint Benedict and Saint John's University and University of North Dakota and later became a lawyer.[3] He served as Speaker of the South Dakota House of Representatives from 1973 to 1974.