Steven Alexzander Horsford (born April 29, 1973) is an American politician and businessman serving as the U.S. representative for Nevada's 4th congressional district since 2019, previously holding the position from 2013 to 2015. He also served as chair of the Congressional Black Caucus from 2023 to 2025. A member of the Democratic Party, he served in the Nevada Senate, representing the 4th district, in Clark County, from 2005 to 2013. Horsford was the first African American to serve as Majority Leader (2009–2013) and the first African American to represent Nevada in Congress. He lost to Republican nominee Cresent Hardy in 2014.

After that election, Horsford joined an international Las Vegas-based business and marketing consulting firm, R&R Partners, for which he had worked before his political career. In January 2018, he announced that he would run for the open seat vacated by Democrat Ruben Kihuen in the midterm elections. In November 2018, he defeated former U.S. Representative Cresent Hardy in a rematch of their 2014 race.