John Holmstrom (born 1954) is an American underground cartoonist and writer. He is best known for illustrating the covers of the Ramones albums Rocket to Russia and Road to Ruin, as well as his characters Bosko and Joe (published in Scholastic's Bananas magazine from 1975 to 1984).

At age 21, Holstrom was the founding editor of Punk Magazine. After Punk ceased publication in 1979, he worked for several publications, including The Village Voice, Video Games magazine, K-Power, and Heavy Metal.