Dan Lederman (born November 25, 1972 in Waterloo, Iowa) is an American politician who served as a Republican member of the South Dakota Senate representing District 16 from January 11, 2011 until he resigned on March 30, 2015. Lederman served consecutively in the South Dakota Legislature from January 2009 until January 11, 2011 in the South Dakota House of Representatives District 16 seat.
In February 2017, Lederman was elected State Chairman of the South Dakota Republican Party in the first contested party election in decades.
Lederman received his combat medic training at United States Army Medical Department Center and studied fine arts and religion at the University of Iowa.
On October 11, 2017, Republican Gubernatorial Candidate Lora Hubbel sent out a press release circulating a public record showing that Lederman had once registered to vote as a Democrat. In reporting the story, the media noted that Hubbel had changed parties herself a few months earlier. Lederman responded to the candidate's criticism in an in an op/ed released to the media the following day titled "OK to change parties in America.