William Davis Daly (born June 4, 1851) was a Democratic politician who represented New Jersey in the United States House of Representatives at the turn of the twentieth century. Serving as a member of the U.S. House from New Jersey’s 7th Congressional District, he held office as a Representative for a single term.

Daly’s service in Congress began on December 4, 1899, and concluded on March 3, 1901. During this period, he was a historical member of Congress from New Jersey, aligned with the Democratic Party. Although specific committee assignments, office room, and contact details are not recorded in the available metadata, his tenure marks his role in the national legislative body during this brief but defined span in American political history.