Catherine Popper (born December 28, 1973) is an American bass guitarist, singer and songwriter. She is best known for her work with Jesse Malin, Ryan Adams & the Cardinals, Grace Potter and the Nocturnals and Jack White. Popper is also a member of a trio called Puss n Boots with Norah Jones and Sasha Dobson. She released her first single, “Maybe It’s All Right” on Velvet Elk Records in 2020.