Elizabeth Lynne Cheney is an American attorney and politician. She represented Wyoming's at-large congressional district in the U.S. House of Representatives from 2017 to 2023, and served as chair of the House Republican Conference—the third-highest position in the House Republican leadership—from 2019 to 2021. Cheney is known for her vocal opposition to former President Donald Trump. As of March 2023, she is a professor of practice at the University of Virginia Center for Politics.

Wyoming's at-large congressional district is the sole congressional district for the US state of Wyoming. It is the third largest congressional district in the United States in terms of land size. The district is currently represented by Harriet Hageman.