Daniel Webster Hamilton (December 20, 1861 – August 21, 1936) was a one-term Democratic U.S. Representative from Iowa's 6th congressional district.

He attended the country schools and graduated from the University of Iowa College of Law in June 1884.

In November 1906, Hamilton ran as a Democrat against longtime Republican Congressman John F. Lacey in the general election for Iowa's 6th congressional district.

After defeating Lacey, Hamilton became the only Democrat in Iowa's congressional delegation in the Sixtieth Congress.

This article incorporates public domain material from the Biographical Directory of the United States Congress