Charles Knox Robinson III (April 13, 1932 — July 22, 2006) was an American actor who appeared in over 80 films and television series over his career. From 1958 through 1971 he was credited as Charles Robinson and, from 1972 onward, his full birth name, Charles Knox Robinson, also became his stage name. His credits have been occasionally commingled with those of younger actor Charlie Robinson who, during an eight-year (1984–92) stint as court clerk Mac Robinson on Night Court had been credited as Charles Robinson.

Robinson's first on-screen billing in a feature film was as one of the title characters in 1962's The Interns. He established the Torchlight Project together with his wife, Joan, which aided, empowered and enriched the lives of impoverished children in foreign countries. He was also a member of many organizations including: the Academy of Motion Picture Arts and Sciences, Screen Actors Guild, American Federation of Television and Radio Artists, Actors' Equity Association, Playwrights/Dramatists Guild and the Academy of Magical Arts.