Anna Strunsky Walling (née Strunsky; March 21, 1877 – February 25, 1964), usually known as Anna Strunsky, was an American author and advocate of socialism, known for her novels and writings on social issues and the labor movement. Born in the Russian Empire, she emigrated to the United States as a child, later becoming active in socialist movements in San Francisco and New York City. While studying at Stanford University, she became friends with writer Jack London, with whom she co-authored the 1903 epistolary novel The Kempton-Wace Letters. In 1906, she married American socialist William English Walling, and they remained active in socialist and progressive causes. Strunsky opposed war and advocated for the abolition of capital punishment.