Jačancy is a village in Lida Raion, in Grodno Region, Belarus. Jačancy lies at 185 m above sea level. It has 13 inhabitants. The nearest city is Lida, 13.5 km to the south. Among the landmarks around are Lida Castle (14.1 km), Saint Michael Archangel Orthodox church in Lida (13.4 km) and Church of the Exaltation of the Holy Cross, Lida (13.9 km).

Also written Ячанцы.