| Prague 9 | |
| Native Name: | Praha 9 |
| Settlement Type: | Municipal District of Prague Administrative District of Prague |
| Subdivision Type: | Country |
| Subdivision Name: | Czech Republic |
| Subdivision Type2: | Region |
| Subdivision Name2: | Prague |
| Coordinates: | 50.1106°N 14.5°W |
| Leader Title: | Mayor |
| Leader Name: | Tomáš Portlík |
| Area Total Km2: | 13.31 |
| Population As Of: | 2021 |
| Population Total: | 62651 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 190 00 |
| Iso Code: | Notable people section:There are currently no notable people from Prague 9. |
| Website: | http://www.praha9.cz |
Prague 9 is both a municipal and an administrative district in Prague, Czech Republic. Prague 9 administrative districts takes care mainly of districts of Vysočany, Prosek, Hrdlořezy, and partly of Hloubětín, Libeň, Střížkov a Malešice.
O2 Arena (Prague) is located in Prague 9 on the edge of Libeň and Vysočany districts.