ADJ or Adj may refer to:
, in linguistics, glossing abbreviation for adjective, a part of speech AdJ, software Adjugate (or classical adjoint) of a matrix in mathematics Adjukru language, ISO-639-3 code Amman Civil Airport in Amman Governorate, Jordan (IATA airport code ADJ)
See also
AD (disambiguation) DJ (disambiguation) Adjacent (disambiguation) Adjustment (disambiguation)