The 2022 United States Senate elections were held on November 8, 2022, concurrently with other midterm elections at the federal, state and local levels. Regularly scheduled elections were held for 34 of the 100 seats in the U.S. Senate, the winners of which will serve six-year terms beginning with the 118th United States Congress. Two special elections were held to complete unexpired terms. While pundits considered the Republican Party a slight favorite to gain control of the Senate, Senate Democrats outperformed expectations and expanded the majority they had held since 2021, gaining one seat for a functioning 51–49 majority.

The United States Senate is the upper chamber of the United States Congress. The United States Senate and the lower chamber of Congress, the United States House of Representatives, comprise the federal bicameral legislature of the United States. Together, the Senate and the House maintain authority under Article One of the U.S. Constitution to pass or defeat federal legislation. The Senate has exclusive power to confirm U.S. presidential appointments, approve or reject treaties, and try cases of impeachment brought by the House. The Senate and the House provide a check and balance on the powers of the executive and judicial branches of government.