Prabartak Sangha (Bengali: প্রবর্ত্তক সংঘ) is a Hindu religious institution known for its social work. It was founded in 1920 by Motilal Roy, a revolutionary, who was inspired and initiated in the spiritual path by Sri Aurobindo. Based in Chandernagore, the Prabartak Sangha in its heyday had branches in the districts of Howrah, 24 Parganas and Chittagong. It has a temple, a monastery, a boys school, a girls school and a destitute home.