| Osa | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Mrągowo |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Mikołajki |
| Coordinates: | 53.8186°N 21.6517°W |
| Pushpin Map: | Poland |
| Pushpin Label Position: | bottom |
| Utc Offset: | +1 |
| Timezone1: | CET |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Iso Code: | POL |
| Registration Plate: | NMR |
| Postal Code Type: | Postal code |
| Postal Code: | 11-730 |
Osa is a village in northern Poland, in the administrative district of Gmina Mikołajki, within Mrągowo County, Warmian-Masurian Voivodeship.[1] It lies approximately 5km (03miles) north-east of Mikołajki, 240NaN0 east of Mrągowo, and 760NaN0 east of the regional capital Olsztyn.