| National Monarchist Union | |
| Native Name: | Unión Monárquica Nacional |
| Ideology: | Monarchism |
| Position: | Right-wing |
| Country: | Spain |
| State: | Catalonia |
The National Monarchist Union (Spanish; Castilian: Unión Monárquica Nacional, UMN) was a political alliance during the Spanish Restoration period, that existed between 1919 and 1931. It was founded in Catalonia by supporters of Alfonso XIII's monarchy to try to counteract the political hegemony that the Regionalist League of Catalonia had at the time.[1]