Jefferson De Angelis (November 30, 1859 – March 20, 1933) born Thomas Jefferson De Angelis in San Francisco was a 19th-20th century stage actor who specialized in comedy and acrobatic clowning and who achieved fame in vaudeville and on Broadway. He was also a stage director and producer. He began in Baltimore at age 10. Near the end of his life he appeared in the hit 1927 Broadway play The Royal Family by Edna Ferber. He sporadically appeared in silent films, mostly shorts. De Angelis wrote his autobiography in 1931 titled A Vagabond Trouper with Alvin E. Harlow.