David Dwain Phelps (born October 26, 1947) is an American educator and politician and former Democratic member of the U.S. House of Representatives from Illinois.

He was elected to Congress in 1998 from Illinois's 19th congressional district after 10-year incumbent Glenn Poshard made an unsuccessful run for governor.

Phelps quit his $127,700 post in 2011 in the midst of an unfolding scandal involving similar allegations against one of his deputies at the agency, Danny Clayton.

Rod Blagojevich after losing a bid for Congress to Republican U.S. Rep. John Shimkus of Collinsville in the 2002 election.

While serving in the U.S. House, he was the hymn director for the Congressional Weekly Prayer Breakfast on Capitol Hill.