Gremzdel [ˈɡrɛmzdɛl], is a village in the administrative district of Gmina Krasnopol, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland.

[3] It lies approximately 5 kilometres (3 mi) north of Krasnopol, 13 km (8 mi) west of Sejny, and 115 km (71 mi) north of the regional capital Białystok.

From 1975-1998 the village was administratively governed by the Suwałki Voivodeship.

In the southern direction of the village is a lake with the same name.

This Sejny County location article is a stub.