Prasanta Sur (Bengali: ???????? ???) (1 January 1923 – 29 February 2008) was the convenor of the Kolkata district Left Front committee and became the first Left Front Mayor of Kolkata in 1969.
A member of the state committee of Communist Party of India (Marxist), Sur was the urban development minister in the first Left Front government in 1977.
Later, he also held key portfolios like health and refugee rehabilitation.
He died on 29 February 2008, aged 85, after suffering from age-related problems.