129

129 may refer to:


 * AD 129, a year of the Julian calendar
 * 129 (number), the natural number that follows 128
 * 129 BC, a year of the Julian calendar
 * 129 (East Riding) Field Squadron, Royal Engineers
 * 129 (New Jersey bus)
 * LZ 129 Hindenburg, an airship
 * Henschel Hs 129, a German World War II ground-attack aircraft
 * Soviet submarine K-129
 * 129 (barge), an American whaleback barge
 * 129 Antigone, a main-belt asteroid