The 1920 United States Senate election in Kansas was held on November 2, 1920. Incumbent Republican Senator Charles Curtis ran for re-election to his second consecutive term, and his third term overall. He was challenged by former Governor George H. Hodges, the Democratic nominee, and defeated him in a landslide as Republican presidential nominee Warren G. Harding won the state by a similar margin.
Prior to the primary, Harding passed away. The Kansas Socialist Party subsequently named Dan Beedy as its replacement nominee.