Giby  Giby (), is a village in Sejny County, Podlaskie Voivodeship, in north-eastern Poland, close to the borders with Belarus and Lithuania. It is the seat of the gmina (administrative district) called Gmina Giby. It lies approximately south of Sejny and north of the regional capital Białystok. The village has an approximate population of 1,000. It was established in 1594. Today's Catholic church of St. Anne (1912) originally served Old Believers in Pogorzelec village, from where it was moved to Giby in 1982.