John Le Mesurier ( , born John Elton Le Mesurier Halliley; 5 April 191215 November 1983) was an English actor. He is perhaps best remembered for his comedic role as Sergeant Arthur Wilson in the BBC television situation comedy "Dad's Army" (1968–77). A self-confessed "jobbing actor", Le Mesurier appeared in more than 120 films across a range of genres, normally in smaller supporting parts.
John Le Mesurier beat out other actors to win the role of Sergeant Arthur Wilson on "Dad's Army", the role he is best known for.