Dustin M. Johnson (born September 30, 1976) is an American politician serving as the U.S. representative for South Dakota's at-large congressional district since 2019. A member of the Republican Party, he served as South Dakota Public Utilities Commissioner from 2005 to 2011, when he was appointed chief of staff to Governor Dennis Daugaard, a position he held until 2014. Between his state political career and congressional service, Johnson was the vice president of Vantage Point Solutions in Mitchell, South Dakota.