Saharsa is a city and a municipality in the Saharsa district in the Indian state of Bihar in north India, east of the Kosi River. It is the administrative headquarters of the Saharsa District, and is in the Kosi Division. Sahrasa is also the name of the assembly constituency, which contains the city and neighboring parts of the district. The origin of the name Saharsa is unknown.

Earlier Saharsa district was part of Bhagalpur and munger district, in 1954 it was made a district. It was also made headquarter of Kosi Division on 2 October 1972, comprising Saharsa, Purnia and Katihar district, with its headquarters at Saharsa. Similarly a new Civil Sub-Division Birpur was created on 1 December 1972, consisting of 24 development blocks viz. Raghopur, Chhatapur, Basantpur and Nirmali which were previously under Supaul subdivision of this district. Two new districts Madhepura & Supaul have been formed from Saharsa district on 30 April 1981 and 1991. Saharsa district now consists of two subdivisions, viz. Saharsa Sadar and Simri Bakhtiarpur. The district consists of 10 development blocks and anchals each.

Rajesh Ranjan पप्पू यादव (born 1961/1962 (age 49–50)), better known as Pappu Yadav, is an Indian politician. He won elections to the Lok Sabha in 1991, 1996, 1999, and in 2004 from several constituencies in Bihar on the RJD ticket. On 2008-02-14, he was convicted in the murder of Communist Party of India (Marxist) legislator Ajit Sarkar and sentenced to life. Subsequently he was debarred from the 2009 general election.

Pappu Yadav has more than 15 criminal cases pending against him, but has been convicted only in the Ajit Sarkar murder case.

Pappu Yadav comes from a farmer family in Madhepura and started off as a farmer. He was born in Khurda, Karveli in Madhepura district. From his college life he started his career as a student.

Initially a small-time criminal, he moved up the crime ladder along with his role in politics. By the late 90s, he was a well-established mafia don, muscling his way around Bihar and across India.

He was elected to the Bihar legislative assembly from Singheshwar,Madhepura in 1990 as an independent candidate, but in 1991 he contested and won through to the 11th Lok Sabha from Purnea. He served four Lok Sabha terms, and asked one question on agriculture. He has been a member, off and on, of Lalu Prasad Yadav's Rashtriya Janata Dal. He has switched parties often, having been a member of the Samajwadi Party, and LJP.

Anand Mohan Singh is a politician from village of Panchgachiya, district Saharsa, Bihar, India. He belongs to royal zamindar Tomar Rajput clan, which takes pride in establishing reputed cities of Delhi and Gwalior. He is the founder of the Bihar People's Party and was also a member of the Janata Dal (United).

He rose to fame in mainstream politics when he helped his wife Anand win an election for the Vaishali parliamentary constituency in 1994 as an independent candidate. Riding high on this success, his party (Bihar People's Party) contested from all the seats of Bihar in the following state elections and saw modest success. Singh was elected to the Lok Sabha from the Sheohar constituency in 1996 and 1998. He was convicted in the murder of an IAS officer and has been put for charge. The IAS officer is said to have tried to control a mob which was not in his constituency, and subsequently got attacked by the mob itself. It is said^{[by whom?]} that Anand Mohan must have provoked the mob to beat the IAS officer, though there are chances that the mob themselves reacted badly of having been beaten and charged by the IAS officer, despite not having jurisdiction. Anand Mohan later authored several inspirational books and poems while he was held captive in Saharsa jail. In January 2012, he released a book of poems titled Qaid mein Azad Kalam, which was inaugurated by personalities such as Jaswant Singh, Bhim Singh, Rajeev Pratap Rudy, and many more notable leaders.