Berżałowce-Gajówka ([bɛrʐaˈwɔft͡sɛ ɡaˈjufka]; Lithuanian: Beržalapių Gajuvka) is a village in the administrative district of Gmina Sejny, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland, close to the border with Lithuania. It lies approximately 7 kilometres (4 mi) south-east of Sejny and 107 km (66 mi) north of the regional capital Białystok.