Pranjit Singha Roy is a politician from Tripura, India. In 2013 assembly elections, he represents Radhakishorpur constituency in Gomati district in Tripura Legislative Assembly.

In 2016, he was one of the six MLA from Indian National Congress who joined All India Trinamool Congress. Due to unhappiness towards party because of allying Communist Party of India in 2016 West Bengal Legislative Assembly election.

In August 2017, he was one of the six MLA from All India Trinamool Congress who joined Bharatiya Janata Party after they cross voted against the party lines in 2017 Indian presidential election.