120th Regiment
120th Regiment may refer to:
- 120th Regiment of Foot (disambiguation), British Army regiments
- 120th Infantry Regiment (United States)
- 120th Infantry Regiment "Emilia"
- 120th Field Artillery Regiment
- 120th Light Anti-Aircraft Regiment, Royal Artillery
- 120th Heavy Anti-Aircraft Regiment, Royal Artillery
- 120th (South Midland) Field Regiment, Royal Artillery
- 120th Motorized Artillery Regiment, Italy
- 120th Fighter Aviation Regiment
- 120th Guards Fighter Aviation Regiment