C9
C9 stands for:
- Chrysler C9, a car model from 1936
- Cirrus Airlines, IATA Coder the German airline
- HMS C9, a British submarine
- Complement component C9, a protein of the complement system
- Sauber C9, a race car from the World Sportscar Championship
C-9 stands for:
- McDonnell Douglas C -9, a twin -aisle aircraft
- USS Montgomery (C -9), a cruiser of the U.S. Navy
- C-9, a telescope manufacturer Celestron Celestron see # range
- Disambiguation
- Abbreviation