Samuel Robert Johnson (October 11, 1930 – May 27, 2020) was an American politician who served as the U.S. representative for Texas's 3rd congressional district in Congress from 1991 to 2019. He was a member of the Republican Party. In October and November 2015, he was the acting Chairman of the House Committee on Ways and Means, where he also served as chairman of the Social Security Subcommittee.