| Koszajny | |
| Settlement Type: | Village |
| Total Type: | |
| Subdivision Type: | Country |
| Subdivision Type1: | Voivodeship |
| Subdivision Name1: | Warmian-Masurian |
| Subdivision Type2: | County |
| Subdivision Name2: | Ostróda |
| Subdivision Type3: | Gmina |
| Subdivision Name3: | Małdyty |
| Pushpin Map: | Poland |
| Coordinates: | 53.9333°N 54°W |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Registration Plate: | NOS |
Koszajny is a village in the administrative district of Gmina Małdyty, within Ostróda County, Warmian-Masurian Voivodeship, in northern Poland.[1] It lies approximately 11km (07miles) west of Małdyty, 370NaN0 north-west of Ostróda, and 630NaN0 west of the regional capital Olsztyn.
In November 1831, several Polish infantry units of the November Uprising stopped in the village on the way to their internment places.[2]