Kojły ( Койли , Koily) is a village in the administrative district of Gmina Czyże, within Hajnówka County, Podlaskie Voivodeship, in north-eastern Poland. It lies approximately 5 km east of Czyże, 8 km north-west of Hajnówka, and 43 km south-east of the regional capital Białystok.
According to the 1921 census, the village was inhabited by 386 people, among whom 380 Orthodox, and 6 Mosaic. At the same time, all inhabitants declared Belarusian nationality. There were 84 residential buildings in the village.