Alerion is a term for a heraldic bird.
Alerion may also refer to:
Alerion Aviation, an American private jet charter company Alerion Express 19, an American trailerable sailboat design Alerion Express 28, an American sailboat design Riout 102T Alérion, a 1937 flapping-wing aircraft "Alerion", a song by Asking Alexandria from the 2009 album Stand Up and Scream
See also
Aileron, a flight control surface