| 1 | Capt. Williamson A Sangma | 02.04.1970 - 18.03.1972 | Interim | All Party Hill Leaders Conference |
| 2 | Capt. Williamson A Sangma | 18.02.1972 - 21.11.1976 | 1st (1972 Election) | All Party Hill Leaders Conference |
| 3 | Capt. Williamson A Sangma | 22.11.1976 - 03.03.1978 | | Indian National Congress |
| 4 | Darwin Diengdoh Pugh | 10.03.1978 - 06.05.1979 | 2nd (1978 Election) | All Party Hill Leaders Conference |
| 5 | B. B. Lyngdoh | 07.05.1979 - 07.05.1981 | | All Party Hill Leaders Conference |
| 6 | Capt. Williamson A Sangma | 07.05.1981 - 24.02.1983 | | Indian National Congress |