| Donji grad | |
| Official Name: | Gradska četvrt Donji grad |
| Settlement Type: | District of Zagreb |
| Mapsize: | 200px |
| Subdivision Type: | Country |
| Subdivision Name: | Croatia |
| Subdivision Type1: | County |
| Subdivision Name1: | City of Zagreb |
| Leader Title: | Council President |
| Leader Name: | Petar Paradžik (SDP) |
| Leader Title1: | District Council |
| Established Title: | Modern district founded |
| Established Date: | 14 December 1999 |
| Area Footnotes: | [1] |
| Area Total Km2: | 3.016 |
| Population As Of: | 2011 |
| Population Total: | 37024 |
| Population Density Km2: | auto |
| Coordinates: | 45.8083°N 15.9761°W |
Donji grad (in Croatian pronounced as /dôːɲiː grâːd/, locally also in Croatian pronounced as /ˈdoʎɲi grad/,) is one of the 17 city districts of Zagreb, the capital of Croatia. It is located in the central part of the city and has 37,024 inhabitants (as of 2011). The official name of the district is rarely used, for it is dubbed centar (center) by most Zagreb residents even though "centar" encompasses some southern parts of district Gornji Grad-Medveščak.