129th
- 129 (number)
- 129 BC
- 129th (South Western) Brigade
- 129th (Wentworth) Battalion, CEF
- 129th Delaware General Assembly
- 129th Duke of Connaught's Own Baluchis
- 129th Field Artillery Regiment (United States)
- 129th Illinois Volunteer Infantry Regiment
- 129th Infantry Brigade (United Kingdom)
- 129th Infantry Division (Wehrmacht)
- 129th Infantry Regiment (United States)
- 129th Kentucky Derby
- 129th Ohio General Assembly
- 129th Ohio Infantry
- 129th Regiment of Foot
- 129th Rescue Squadron
- 129th Rescue Wing
- 129th Strategic Reconnaissance Squadron
- 129th Street (IRT Third Avenue Line)
- 129th Street (Manhattan)
- 129th Toronto Scouting Group
- 129th meridian east
- 129th meridian west
- AD 129
- Pennsylvania's 129th Representative District