Tarui-juku (垂井宿 Tarui-juku?) was the fifty-seventh of the sixty-nine stations of the Nakasendō. It is located in the present-day town of Tarui, Fuwa District, Gifu Prefecture, Japan.
Tarui-juku was divided into three parts: western, middle and eastern. Its honjin was located in the middle section. The post town itself served as a major transportation hub for western Mino Province, as it was one end point for the Minoji, which connected the Nakasendō with the Tōkaidō at Miya-juku. It also sat on the banks of the Ai River.
In 1843, the post station had 1,179 residents and 315 buildings. Among the buildings, there was one honjin, one sub-honjin, and 27 hatago.
Coordinates: 35°22′17.6″N 136°31′33.7″E / 35.371556°N 136.526028°E