Gremzdy Polskie , is a village in the administrative district of Gmina Krasnopol, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland.
Gremzdy Polskie lies near the to Gremzdy lake.
In 1827 it was recorded that the population of the village numbered at 85 and 9 homes and in 1881 it was numbered at 139 people and 16 homes.