Charles Knox Robinson III 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.

Charles P. Robinson was an American stage, film and television actor. He is best known for his role on the NBC sitcom Night Court as Macintosh "Mac" Robinson, the clerk of the court and a Vietnam War veteran. Although his most frequent on-screen billing was Charlie Robinson, Night Court had credited him as Charles Robinson throughout his 1984–1992 stint as Mac. In two of his earliest film appearances, 1974's Sugar Hill and 1975's The Black Gestapo, he was credited as Charles P. Robinson. Some of his credits have been occasionally commingled with ones of older actor Charles Knox Robinson who, billed as Charles Robinson, was featured in numerous films and TV episodes between 1958 and 1971.