Willam Belli, known mononymously as Willam, is an American actor, model, drag queen and author. He is perhaps best familiar to the television audience for his work in the dark comedy series Eastsiders (2012-) and the medical drama Nip/Tuck (2003-'10). Besides these, Belli has also appeared in music videos by popular artists like Rihanna and Lady Gaga.

Notable feature film credits include American Pie: The Wedding (2003), the romantic comedy Because I Said So (2007) and the musical romantic drama A Star is Born.