Zalesye (; literally: "area beyond the forest") or
Opolye (Опо́лье; literally: "area in the fields") is a historical region of
Russia, comprising the north and west parts of
Vladimir Oblast, the north-east of
Moscow Oblast and the south of
Yaroslavl Oblast. As a kernel of the medieval state of
Vladimir-Suzdal, this area played a vital part in the development of Russian statehood.