Kalyan Singh was an Indian politician known for his role as the Chief Minister of Uttar Pradesh. He served two terms, first from 1991 to 1992 and then from 1997 to 1999. Singh was a member of the Bharatiya Janata Party (BJP) and played a significant role in the party's rise in Indian politics during the 1990s. In addition to his tenure as Chief Minister, Kalyan Singh held various positions within the BJP and was a member of the Lok Sabha, the lower house of India's Parliament. He was known for his strong leadership and influence in state politics, particularly in the context of Hindu nationalism.