The 2018 United States Senate election in Virginia took place on November 6, 2018, to elect a member of the United States Senate to represent the Commonwealth of Virginia, concurrently with other elections to the U.S. Senate, elections to the United States House of Representatives, and various state and local elections. Incumbent Democratic Senator Tim Kaine, who had been his party's unsuccessful nominee for vice president two years earlier, was re-elected to a second term in office, winning this seat by the largest margin since 1988. This was the first election since 1994 that anyone had been re-elected to this seat.

Timothy Michael Kaine is an American lawyer and politician serving as the junior United States senator from Virginia since 2013. A member of the Democratic Party, he served as the 70th governor of Virginia from 2006 to 2010, and as the 38th lieutenant governor of Virginia from 2002 to 2006. Kaine was the Democratic nominee for vice president of the United States in the 2016 election as Hillary Clinton's running mate.