Kalpana Datta ( born on 27 July 1913 ) ,later Kalpana Joshi was an Indian independence movementactivist and a member of the armed independence movement led by Surya Sen, which carried out the Chittagong armoury raid in 1930. Later she joined the Communist Party of India and married Puran Chand Joshi, then General Secretary of the Communist Party of India in 1943.
Kalpana Datta (also commonly spelt Dutta or Dutt) was born at Sripur, a village of Chittagong District in the Bengal Province of British India (Sripur is now located in Boalkhali Upazila in Bangladesh). After passing her matriculation examination in 1929 from Chittagong, she went to Calcutta and joined the Bethune College for graduation in Science. Soon, she joined the Chhatri Sangha (Women Students Association), a semi-revolutionary organisation in which Bina Das and Pritilata Waddedar were also active.