139th
- 139 (disambiguation)
- 139th (Northumberland) Battalion, CEF
- 139th (Nottinghamshire and Derbyshire) Brigade
- 139th Aero Squadron
- 139th Airlift Squadron
- 139th Airlift Wing
- 139th Delaware General Assembly
- 139th Georgia General Assembly
- 139th Illinois Volunteer Infantry Regiment
- 139th Indiana Infantry Regiment
- 139th Intelligence Squadron
- 139th Medical Brigade
- 139th New York State Legislature
- 139th New York Volunteer Infantry Regiment
- 139th Ohio Infantry
- 139th Open
- 139th Pennsylvania Infantry
- 139th Rifle Division (Soviet Union)
- 139th Street (Manhattan)
- 139th meridian east
- 139th meridian west
- Connecticut's 139th assembly district
- Pennsylvania's 139th Representative District