Aleksandrowo [alɛksanˈdrɔvɔ] is a village in the administrative district of Gmina Grodzisk, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 5 kilometres (3 mi) south-east of Grodzisk, 17 km (11 mi) north of Siemiatycze, and 66 km (41 mi) south of the regional capital Białystok.