Baciki Średnie [baˈt͡ɕikʲi ˈɕrɛdɲɛ] is a village in the administrative district of Gmina Siemiatycze, within Siemiatycze County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 4 kilometres (2 mi) north-east of Siemiatycze and 77 km (48 mi) south of the regional capital Białystok.