| Castellolí | |
| Settlement Type: | Municipality |
| Pushpin Map: | Spain Province of Barcelona#Spain |
| Pushpin Map Caption: | Location in Catalonia |
| Coordinates: | 41.6003°N 1.7014°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Spain |
| Subdivision Type1: | Community |
| Subdivision Type2: | Province |
| Subdivision Name2: | Barcelona |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Anoia |
| Leader Title: | Mayor |
| Leader Name: | Joan Serra Muset (2015)[1] |
| Unit Pref: | Metric |
| Area Footnotes: | [2] |
| Area Total Km2: | 25.3 |
| Population Density Km2: | auto |
Castellolí (in Catalan; Valencian pronounced as /kəsˌteʎuˈli/) is a municipality in the comarca area of the Anoia in Catalonia, Spain.