| Official Name: | Demerje |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | bottom |
| Coordinates: | 45.7297°N 15.885°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | City of Zagreb |
| Subdivision Type2: | City District |
| Subdivision Name2: | Brezovica |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 10.2 |
| Elevation M: | 125 |
| Population As Of: | 2021 |
| Population Total: | 737 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 10251 |
| Area Code: | 01 |
Demerje is a settlement within the City of Zagreb, Croatia. The settlement is administered as a part of the City of Zagreb.
According to the 2021 census, its population was 737. According to national census of 2011, population of the settlement was 721.