Charles Herbert Workman (5 May 1872 – 1 May 1923) was a singer and actor best known as a successor to George Grossmith in the comic baritone roles in Gilbert and Sullivan operas. He was variously credited as Charles H. Workman, C. Herbert Workman and C. H. Workman.

Workman joined the D'Oyly Carte Opera Company in 1894 and played several roles with the company in London before becoming principal comedian, for nearly a decade, with D'Oyly Carte touring companies. He was cast in the comic leads for the two London repertory seasons of Gilbert and Sullivan at the Savoy Theatre in 1906−07 and 1908−09, earning mostly enthusiastic reviews. After this, he left the company and took on the management of the Savoy Theatre. He soon fell out with W. S. Gilbert over his production of the dramatist's Fallen Fairies; Gilbert banned Workman from appearing in his operas in Britain.

Workman subsequently had leading roles in several West End musical comedies and operettas. In 1914 he relocated to Australia, where he spent much of his later career in his old Gilbert and Sullivan roles with the J. C. Williamson Gilbert and Sullivan Opera Company, and in a few parts in musicals. At the age of 50 he died at sea near Hong Kong while returning from a Williamson tour.