The 1947 Sylhet referendum was held in the Sylhet District of the Assam Province of British India to decide whether the district would remain in Undivided Assam and therefore within the post-independence Dominion of India, or leave Assam for East Bengal and consequently join the newly-created Dominion of Pakistan. The referendum's turnout was in favour of joining the Pakistani union; however, the district's Karimganj subdivision remained within the Indian state of Assam.