A Legionnaire is a member of the French army corps Légion Étrangère.
Legionnaire may also refer to:
Member of an organization
- A member of the American Legion
- A member of the Iron Guard (The Legion of the Archangel Michael)
- A member of the Spanish Legion
- A misused term for a legionary, an infantry soldier of the ancient Roman Army
- A member of the fictional Legion of Super-Heroes in DC Comics
Other uses
- A Legionnaire, a 1936 French comedy film
- Legionnaire (film), a 1998 American war drama starring Jean Claude Van Damme
- Legionnaire (role-playing game), a 1990 science fiction game
- Legionnaire (video game), a 1982 8-bit computer game
- Legionnaire (passenger train), later Minnesotan, a train operated by Chicago Great Western Railway 1925–1949