Manab Adhikar Sangram Samiti (MASS), (Assamese মানৱ অধিকাৰ সংগ্ৰাম সমিতি), is a regional non-profit human rights NGO in Assam. It was founded in 1991 by Parag Kumar Das along with a group of intellectuals and journalists of Assam. The present chairman is Ajit Kumar Bhuyan and its headquarters is at Bamunimoidam, Guwahati.