Coordinates: 54°56′N 20°29′E / 54.933°N 20.483°E
Mokhovoye (Russian: Моховое; German: Wiskiauten; Lithuanian: Viskiautai) is a rural locality (a settlement) in Zelenogradsky District of Kaliningrad Oblast, Russia, located at the southwestern corner of the Curonian Lagoon.
It was important in early medieval history as a likely starting point of the Amber Road to the south. Kaup is the name of a hill immediately north, where a large burial site with Scandinavian grave goods was found.
Archaeological excavations, undertaken in 1899 and 1932, when the area was a part of East Prussia, and in 1979, during Soviet times, suggest that a major center of Old Prussians sprang up there in the early 9th century. Kaup may have been its name, because the place-name is cognate to Old Prussian (and Germanic) terms for "purchase". Marija Gimbutas describes it as "the gateway for the traffic leading to the east via the lower Nemunas basin into the lands of the Curonians, Lithuanians, and other Baltic tribes".