Annaka-shuku (安中宿 Annaka-shuku?) was the fifteenth of the sixty-nine stations of the Nakasendō. It is located in the present-day city of Annaka, Gunma Prefecture, Japan. Batō Kan'on (馬頭漢音 horsehead gods) lined the way to the post town.
Coordinates: 36°19′27″N 138°53′22″E / 36.3243°N 138.8894°E