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