Suranjit Sengupta was born in Derai Upazila, Sunamganj District. His political career started with association with the leftist parties. In 1970's national election of Pakistan, he was elected from Sylhet District as a candidate of National Awami Party in the Provincial Assembly.He Participated in 1971 liberation war.in the first constituent assembly of Bangladesh, he was a vocal member of the Opposition Bench. Later on he floated and lead Ekota Party. In early 1990s, he joined Awami League.