Alvah Posen (1895 - June 10, 1960) was an American cartoonist on several comic strips, but he is best known for his strip Sweeney & Son and as co-producer of the now-lost Marx Brothers film, Humor Risk (1921). Born in New York, Posen served in the Army during World War I and worked for a film advertising agency when the war ended. He then travelled in the Orient as a member of a geological and mining expedition, spending a year in Siam and Yunan.