Sanjay Kumar Singh may refer to:
Although India is a parliamentary democracy, the country's politics has become dynastic or with high level of nepotism, possibly due to the absence of party organizations, independent civil-society associations which mobilize support for a party, or centralized financing of elections. The dynastic phenomenon is present at the national, state, regional, and district level. The Nehru–Gandhi family has produced three Indian prime ministers, and family members have largely led the Congress party since 1978. The ruling Bharatiya Janata Party (BJP) also has several dynastic leaders. In addition to the major national parties, other national and regional parties such as Shiromani Akali Dal, Shiv Sena, Samajwadi Party, Rashtriya Janata Dal, Janata Dal Secular, Jharkhand Mukti Morcha, Dravida Munnetra Kazhagam, Kerala Congress, Jammu & Kashmir National Conference, Indian Union Muslim League, AIMIM, and the Nationalist Congress Party are all dominated by families, mostly those of the party founders.
The Bihar Legislative Assembly also known as the Bihar Vidhan Sabha is the lower house of the bicameral Bihar Legislature of the state of Bihar in India. The first state elections were held in 1952.
25°54′34″N87°10′35″ERupauli Assembly constituency is an assembly constituency in Purnia district in the Indian state of Bihar.
Sonbarsha Assembly constituency is an assembly constituency in Saharsa district in the Indian state of Bihar. It is reserved for scheduled castes from 2010. Earlier, it was an open seat.
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Baikunthpur Assembly constituency is an assembly constituency in Dighwa Dubauli locality of Gopalganj district in the Indian state of Bihar.
25°47′49″N85°12′24″EPatepur Assembly constituency is an assembly constituency in Vaishali district in the Indian state of Bihar.It is reserved for scheduled castes.
Cheria-Bariarpur is an assembly constituency in Begusarai district in the Indian state of Bihar.
Matihani Assembly constituency is an assembly constituency in Begusarai district in the Indian state of Bihar.

Rajo Singh was a politician from Bihar, India. He remained active in the electoral politics at the state and national level for over 50 years.
Sunila Devi was an Indian social activist and politician. She was an executive member of an NGO called People's Association for Research and Development, Patna which is working on financial inclusion of women and on the issues of women empowerment through micro-finance activities particularly in Nawada district of Bihar. She was wife of Sheikhpura former MLA Sanjay Kumar Singh alias Munna Singh who died in 2010, who was two times Member of Bihar Legislative Assembly before her. Now her son represents Barbigha earlier as Candidate of Indian National Congress but in 2020 Elections he joined Janata Dal (United).
Karakat Assembly constituency is an assembly constituency for Bihar Legislative Assembly in Rohtas district of Bihar, India. It comes under Karakat. .In 2020 assembly elections, Arun Kumar Singh of CPI(ML) defeated Rajeswar Raj of Bharatiya Janata Party to emerge victorious.
Vijendra Kumar Yadav is an Indian politician and a member of Bihar Legislative Assembly of India. He represented the Sandesh constituency in Bhojpur district of Bihar. He was elected in 2000 as a member of Rashtriya Janata Dal (RJD) but later left the party to join JD(U).
Sanjay Singh Tiger is an Indian politician of the Bharatiya Janata Party (BJP) from Bhojpur district, Bihar. He has served as MLA in Bihar Legislative Assembly representing the Sandesh constituency from 2010 to 2015. Currently, he is the state spokesperson of BJP's Bihar unit.
Ajay Kumar also known as Ajay Kushwaha is an Indian politician from Bihar. He represents Communist Party of India (Marxist). He got elected from Bibhutipur Vidhan Sabha Constituency in 2020 Bihar State Assembly Elections. He is well known for his social work and kind hearted behaviour. In Ujiarpur he is well known politician as he contested from there too before contesting from Bibhutipur. In 2020 Bihar Legislative Assembly elections, he defeated Ram Balak Singh of Janata Dal (United) by a margin of 40,496 votes.
Sudarshan Kumar is an Indian politician from Bihar and a two-time member of the Bihar Legislative Assembly. He won the first time from Indian National Congress and the won second time from Barbigha Assembly constituency on the Janata Dal (United) ticket in the 2020 Bihar Legislative Assembly election. He is a grandson of Rajo Singh who was a two-time MP from Begusarai Lok Sabha and was also elected as an MLA five times from Sheikhpura and once from Barbigha. His father, Sanjay Singh Munna, was MLA from Sheikhpura twice, and his mother, Shrimati Sunila Devi, was MLA of INC twice from the Sheikhpura constituency. Kumar is a life member of the People's Association for Research & Development working in pan India but his major work in Bihar.
Ram Ratan Singh is an Indian politician and leader of Communist Party of India from Bihar and a Member of the Bihar Legislative Assembly. He belongs to Bihat village of Begusarai district and was born in a Bhumihar Brahmin family. He is uncle of JNU leader Kanhaiya Kumar. He won the Teghra Assembly constituency in the 2020 Bihar Legislative Assembly election.
Sanjay Kumar Singh is an Indian politician, currently a member of Bharatiya Janata Party and a Member of the Legislative Assembly (India) from Lalganj, Bihar.
Arun Kumar Yadav is an Indian politician and a member of Bihar Legislative Assembly. He represented the Sandesh constituency in Bhojpur district of Bihar. Arun Yadav was elected in 2015 as a member of Rashtriya Janata Dal (RJD)