Look up adj in Wiktionary, the free dictionary.
ADJ or Adj may refer to:
- Abbreviation for adjustment, adjoining, or adjacent
- ADJ, in linguistics, glossing abbreviation for adjective, a part of speech
- Adjukru language, ISO-639-3 code
- Amman Civil Airport in East Amman, Jordan (IATA code ADJ)
- Adjugate (or classical adjoint) of a matrix in mathematics
- AdJ, software