The Sour Tour was the debut concert tour by American singer-songwriter and actress Olivia Rodrigo in support of her debut studio album, Sour (2021). It began on April 5, 2022, in Portland, Oregon, with shows across North America and Europe. It concluded in London on July 7, comprising 49 shows. Gracie Abrams, Holly Humberstone, Chappell Roan, and Baby Queen served as opening acts.

Olivia Isabel Rodrigo is an American singer-songwriter and actress. She first rose to prominence for starring on the Disney Channel series Bizaardvark (2016–2019) and the Disney+ series High School Musical: The Musical: The Series (2019–2022).