Agnes ("Sis") Cunningham (19 February 1909, Watonga, Okla.–27 June 2004) was an American musician, best known for her involvement as a performer and publicist of folk music and protest songs. She was the founding editor of Broadside magazine, which she published with her husband Gordon Friesen and their daughters. She was also a songwriter: her song "How Can You Keep on Movin' Unless You Migrate Too?" found its way into Woody Guthrie's Dustbowl Ballads, and was also recorded by Ry Cooder (who was unaware of its authorship and attributed it as "Traditional").

Sis Cunningham on Last.fm.