| Arnreit | |
| Pushpin Map: | Austria |
| Pushpin Mapsize: | 270 |
| Pushpin Map Caption: | Location within Austria |
| Coordinates: | 48.5258°N 13.9958°W |
| Subdivision Type: | Country |
| Subdivision Name: | Austria |
| Subdivision Type1: | State |
| Subdivision Name1: | Upper Austria |
| Subdivision Type2: | District |
| Subdivision Name2: | Rohrbach |
| Parts Style: | para |
| Leader Title: | Mayor |
| Leader Name: | Heinz Kobler |
| Elevation M: | 604 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Registration Plate: | RO |
| Postal Code Type: | Postal code |
| Postal Code: | 4122 |
| Area Code Type: | Area code |
| Area Code: | 07282 |
| Website: | www.arnreit.at |
Arnreit is a municipality in Upper Austria in Rohrbach District. It has 1154 inhabitants (as of 1 January 2018). Arnreit is located at an altitude of 604m above sea level in the central area of the Rohrbach district in Mühlviertel.
The municipality includes the following localities (with population as of January 1, 2018):