WSUF (89.9 FM) is a radio station licensed to Noyack, New York and serves the eastern Long Island and southeastern Connecticut areas. It is owned by Sacred Heart University.

It broadcasts a news/talk radio and classical music format that includes programming from NPR, Public Radio International, and American Public Media. For most of the time, it acts as a full satellite of WSHU, though on Sunday mornings and afternoons it simulcasts WSHU-FM's classical programming.

The station was assigned the WSUF call letters by the Federal Communications Commission on October 1, 1993.