IN
Abbreviation of Indiana: a state of the United States.
Proper noun
- Abbreviation of Indiana: a state of the United States.
Related: US-IN
- Initialism of Ilocos Norte: a province of the Ilocos Region, Philippines.
Noun
- Abbreviation of integrase.
- Abbreviation of internegative; a type of film stock, most commonly used regarding 35mm motion picture negative