| Dlouhá Brtnice | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Vysočina |
| Subdivision Type2: | District |
| Subdivision Name2: | Jihlava |
| Pushpin Map: | Czech Republic |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in the Czech Republic |
| Coordinates: | 49.2361°N 15.6042°W |
| Established Title: | First mentioned |
| Established Date: | 1349 |
| Area Total Km2: | 11.43 |
| Elevation M: | 610 |
| Population As Of: | 2024-01-01 |
| Population Footnotes: | [1] |
| Population Total: | 379 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 588 34 |
Dlouhá Brtnice (in Czech pronounced as /ˈdlouhaː ˈbr̩cɲɪtsɛ/; German: Langpirnitz) is a municipality and village in Jihlava District in the Vysočina Region of the Czech Republic. It has about 400 inhabitants.
Dlouhá Brtnice lies approximately 18km (11miles) south of Jihlava and 127km (79miles) south-east of Prague.