Milton Marx (October 23, 1892 - April 21, 1977), known as Gummo, was one of the Marx Brothers. He worked with his brothers on Vaudeville, but left the act because he did not like performing. This was before they made any of their famous movies.

After leaving the act, Gummo went into the dressmaking business. Later he joined with his brother Zeppo Marx and operated a theatrical agency. The agency was later sold and Gummo turned to representing his brother Groucho Marx and television show The Life of Riley, which he helped develop.

He was given his nickname because he wore gum-soled shoes.