| Montesquiu | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Province of Barcelona#Spain |
| Pushpin Map Caption: | Location in Catalonia |
| Coordinates: | 42.11°N 2.2097°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Community |
| Subdivision Type2: | Province |
| Subdivision Type3: | Comarca |
| Subdivision Name2: | Barcelona |
| Subdivision Name3: | Osona |
| Leader Title: | Mayor |
| Leader Name: | Elisabet Ferreres Vergés (2015)[1] |
| Area Footnotes: | [2] |
| Area Total Km2: | 4.9 |
| Elevation M: | 577 |
| Population Density Km2: | auto |
| Population Demonym: | Montesquiuenc, montesquiuenca |
Montesquiu (in Catalan; Valencian pronounced as /muntəsˈkiw/) is a municipality in the comarca (county) of Osona in Catalonia, Spain. It is situated on the banks of the Ter river in the north of the comarca. It is on the main communication route between Barcelona and Puigcerdà, served by the N-152 road and a station on the RENFE railway line. The thirteenth-century castle is used for cultural events during the summer. Montesquiu became part of Osona in the comarcal revision of 1990. Previously, it formed part of Ripollès.
| Pop 1900: | n/a |
| Pop 1930: | n/a |
| Pop 1950: | 1087 |
| Pop 1970: | 1069 |
| Pop 1986: | 932 |
| Pop Latest: | 861 |
| Latest Year: | 2007 |