| Settlement Type: | Village |
| Smithborough | |
| Pushpin Map: | Ireland |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Ireland |
| Coordinates: | 54.2217°N -7.0972°W |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ulster |
| Subdivision Type2: | County |
| Subdivision Name2: | County Monaghan |
| Subdivision Type3: | Barony |
| Subdivision Name3: | Monaghan |
| Unit Pref: | Metric |
| Population As Of: | 2016 |
| Population: | 395 |
| Population Footnotes: | [1] |
Smithborough or Smithboro [2] is a village in County Monaghan, Ireland. It is within the townlands of Mullaghduff and Mullaghbrack. It is roughly midway between Monaghan Town and Clones on the N54. Nearby villages within 6–7 km (3 or 4 miles away) are Threemilehouse, Scotstown, Ballinode, and Newbliss all within County Monaghan and Roslea in County Fermanagh. The local football team is Éire Óg, who wear blue with a gold band.
The Ulster Railway opened Smithborough railway station on 2 March 1863.[3] In 1876 the Great Northern Railway (Ireland) was formed. The station and line was closed on 14 October 1957.