Abraham Walkowitz (March 28, 1878 – January 27, 1965) was an American painter grouped in with early American Modernists working in the Modernist style.

Walkowitz was born in Tyumen, Siberia to Jewish parents. He emigrated with his mother to the United States in his early childhood. He studied at the National Academy of Design in New York City and the Académie Julian in Paris under Jean-Paul Laurens. Walkowitz and his contemporaries later gravitated around photographer Alfred Stieglitz’s 291 Gallery, originally titled the Little Galleries of the Photo-Secession, where the forerunners of modern art in America gathered and where many European artists were first exhibited in the United States. During the 291 years, Walkowitz worked closely with Stieglitz as well as Arthur Dove, Marsden Hartley, and John Marin (often referred to as “The Stieglitz Quartet”).