List of chief ministers of Bihar

The chief minister of Bihar is the chief executive of the Indian state of Bihar. As per the Constitution of India, the Governor of Bihar is the state's de jure head, but de facto executive authority rests with the chief minister. Following elections to the Bihar Legislative Assembly, the governor usually invites the party (or coalition) with a majority of seats to form the government. The governor appoints the chief minister, whose council of ministers are collectively responsible to the assembly. Given that he has the confidence of the assembly, the chief minister's term is for five years and is subject to no term limits.

From 1946, 23 people have been Chief Minister of Bihar. The current incumbent is Nitish Kumar who is having incumbency since 22 February 2015. The longest incumbent chief minister of Bihar held to Nitish Kumar.

Prime Ministers from Bihar
The province of Bihar headquartered in Patna then comprised the present-day states Bihar and Jharkhand. On 1 April 1936, Bihar and Orissa became separate provinces by the partition of the province of Bihar and Orissa. Under the Government of India Act 1935, a bicameral legislature was set up with a legislative assembly and a legislative council with a government headed by the Premier.

Key
Colour key for political parties {{legend||Indian National Congress|border=1px solid #AAAAAA}} {{legend||Janata Dal (United)|border=1px solid #AAAAAA}} {{legend||Rashtriya Janata Dal|border=1px solid #AAAAAA}} {{legend||Janata Dal|border=1px solid #AAAAAA}} {{legend||Samata Party|border=1px solid #AAAAAA}} {{legend|pink|Socialist Party|border=1px solid #AAAAAA}} {{legend|Yellow|Indian National Congress (O)|border=1px solid #AAAAAA}} {{legend|White|N/A (President's rule)|border=1px solid #AAAAAA}}
 * No.: Incumbent number
 * Assassinated or died in office
 * Resigned
 * Resigned following a no-confidence motion

Statistics

 * Timeline