Świętajno (Polish: [ɕfjɛnˈtajnɔ]) is a village in Olecko County, Warmian-Masurian Voivodeship, in north-eastern Poland.

[1] It lies approximately 13 kilometres (8 mi) west of Olecko and 122 km (76 mi) east of the regional capital Olsztyn.

It is located on the northern and eastern shore of Lake Świętajno in the region of Masuria.

The village was founded in 1554 and was inhabited by Poles.

This Olecko County location article is a stub.