William Joseph Cheek (born June 22, 1979 in Greensboro, North Carolina) is an American speed skater and former inline speed skater. He specializes in the short and middle distances.

Cheek's breakthrough was in the 2002 Winter Olympics in Salt Lake City, where he won the bronze medal in the 1,000 meters and just missed the podium in the 1,500 meters by 0.08 seconds.

In 2003 he won a bronze medal at the World Single Distance Championships in Berlin in the 1,000 and the 1,500 meter events. Both distances at that tournament were won by Dutch speed skater Erben Wennemars. In 2005, Cheek made the podium for the first time in the World Sprint Championships, again behind Wennemars.