Genesee County C League
The Genesee County C League was a high school sport league in Genesee County Michigan that operated in the mid-20th century with Class C size schools.
| High School | Join Year | From | Left | league left to |
| Ainsworth | 1950 | 1954 | Genesee County B | |
| Otisville | 1950 | 1954 | merged to Otisville Lakeville Falcons | |
| Hoover | 1950 | 1955 | independent | |
| Saint Mary | 1950 | 1956 | Motor Valley | |
| Lakeville | 1955 | new | 1956 | Genesee County B |
| Dye | 1950 | 1960 | Flint Suburban | |
| Goodrich | 1950 | 1960 | Flint Suburban | |
| Linden | 1950 | 1960 | Flint Suburban | |
| Montrose | 1950 | 1960 | Flint Suburban | |
| Utley | 1950 | 1960 | Flint Suburban | |
| Swartz Creek | 1950 | 1960 | Genesee County B | |
| Bentley | 1952 | independent | 1960 | Genesee County B |
| Atherton | 1954 | independent | 1960 | Genesee County B |