| 1 | Shri Nitish Kumar | 18+ years (as of Nov 2025) | 7,026 days | 9 Terms | Term 1: 03.03.2000 – 10.03.2000 (7 days) • Term 2: 24.11.2005 – 24.11.2010 • Term 3: 26.11.2010 – 20.05.2014 • Term 4: 22.02.2015 – 20.11.2015 (271 days) • Term 5: 20.11.2015 – 27.07.2017 • Term 6: 27.07.2017 – 16.11.2020 • Term 7: 16.11.2020 – 10.08.2022 • Term 8: 10.08.2022 – 28.01.2024 • Term 9: 28.01.2024 – Incumbent (counted to 18.11.2025) |
| 2 | Dr. Shri Krishna Singh | 14 years, 303 days | 5,418 days | 2 Elected Terms As CM (1951 And 1957) | Continuous tenure: 02.04.1946 (as Premier) / 29.04.1952 (as CM) – 31.01.1961; Elected as Chief Minister in the 1951 and 1957 polls |
| 3 | Smt. Rabri Devi | 7 years, 190 days | 2,746 days | 3 Terms | Term 1: 25.07.1997 – 11.02.1999 • Term 2: 09.03.1999 – 02.03.2000 • Term 3: 11.03.2000 – 06.03.2005 |
| 4 | Shri Lalu Prasad Yadav | 7 years, 125 days | 2,687 days | 2 Terms | Term 1: 10.03.1990 – 28.03.1995 • Term 2: 04.04.1995 – 25.07.1997 |
| 5 | Dr. Jagannath Mishra | 5 years, 219 days | 2,006 days | 3 Terms | Term 1: 11.04.1975 – 30.04.1977 • Term 2: 08.06.1980 – 14.08.1983 • Term 3: 06.12.1989 – 10.03.1990 |
