Dean Arthur Heller (born May 10, 1960) is an American businessman and politician who served as a United States senator representing Nevada from 2011 to 2019. A member of the Republican Party, he served as the 15th secretary of state of Nevada from 1995 to 2007 and U.S. representative for Nevada's 2nd congressional district from 2007 to 2011. He was appointed to the U.S. Senate by Governor Brian Sandoval and elected to a full term in the 2012 election. Heller unsuccessfully ran for a second term in 2018, losing to Democrat Jacky Rosen. He was an unsuccessful candidate for governor of Nevada in 2022.