| Olší | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | South Moravian |
| Subdivision Type2: | District |
| Subdivision Name2: | Brno-Country |
| Pushpin Map: | Czech Republic |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in the Czech Republic |
| Coordinates: | 49.4214°N 16.2903°W |
| Established Title: | First mentioned |
| Established Date: | 1255 |
| Area Total Km2: | 8.72 |
| Elevation M: | 537 |
| Population As Of: | 2024-01-01 |
| Population Footnotes: | [1] |
| Population Total: | 353 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 592 61 |
Olší is a municipality and village in Brno-Country District in the South Moravian Region of the Czech Republic. It has about 400 inhabitants.
Olší lies approximately 35km (22miles) north-west of Brno and 154km (96miles) south-east of Prague.
The villages of Klokočí, Litava and Rakové are administrative parts of Olší.