M81 or M-81 may refer to:
- M-81 (Michigan highway), a state highway in Michigan
- McDonnell-Douglas MD81
- Messier 81, a spiral galaxy in the constellation Ursa Major, also known as NGC 3031 or Bode's Galaxy
- U.S. Woodland, a camouflage pattern colloquially known as "M81"
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.