125th
- 125 (number)
- 125th Anniversary of the Confederation of Canada Medal
- 125th Battalion (1st Overseas Battalion of 38th Regiment Dufferin Rifles), CEF
- 125th Delaware General Assembly
- 125th Division (Imperial Japanese Army)
- 125th Division (People's Republic of China)
- 125th Field Artillery Regiment
- 125th Fighter Squadron
- 125th Fighter Wing
- 125th IOC Session
- 125th Illinois Volunteer Infantry Regiment
- 125th Mixed Brigade
- 125th Napier's Rifles
- 125th New York Volunteer Infantry Regiment
- 125th Ohio General Assembly
- 125th Ohio Infantry
- 125th Regiment of Foot
- 125th Special Tactics Squadron
- 125th Street (IND Eighth Avenue Line)
- 125th Street (IRT Broadway – Seventh Avenue Line)
- 125th Street (IRT Lenox Avenue Line)
- 125th Street (IRT Lexington Avenue Line)
- 125th Street (IRT Ninth Avenue Line)
- 125th Street (IRT Second Avenue Line)
- 125th Street (IRT Third Avenue Line)
- 125th Street (Manhattan)
- 125th Street (disambiguation)
- 125th Street Hudson River bridge
- 125th Weather Flight
- 125th meridian east
- 125th meridian west
- AD 125
- Harlem-125th Street (Metro-North station)
- Ohio House of Representatives membership, 125th General Assembly
- Ohio Senate membership, 125th General Assembly
- Small Talk at 125th and Lenox