United People's Democratic Front (UPDF) is a regional political party based in the Chittagong Hill Tracts of Bangladesh. Founded on December 26, 1998 at a conference in Dhaka, the party seeks to establish full autonomy in the Chittagong Hill Tracts through peaceful and democratic means. At the end of the conference, a five-member convening committee was formed with Prasit Bikash Khisha as its convenor.
The UPDF took part in the eighth national parliamentary elections in 2001 and though failed to win in any of the two seats in CHT it contested, the party received a considerable amount of votes cast, to the surprise of many analysts.
In November 2006, the party held its first national congress in Dhaka and elected a central committee with Prasit Bikash Khisha and Rabi Shankar Chakma as its President and General Secretary respectively.