Kalpana Datta (27 July 1913 – 8 February 1995) (later Kalpana Joshi) was an Indian independence movement activist and a member of the armed independence movement led by Surya Sen, which carried out the Chittagong armoury raid in 1930.[1] Later she joined the Communist Party of India and married Puran Chand Joshi, then General Secretary of the Communist Party of India in 1943.