Nakahara-ku (中原区) is one of the 7 wards of the city of Kawasaki in Kanagawa Prefecture, Japan.

Nakahara Ward is located in eastern Kanagawa Prefecture, in the center portion of the city of Kawasaki, bordering on Tokyo to the north and Yokohama to the south.

Under the Nara period Ritsuryō system, it became part of Tachibana District Musashi Province.

Nakahara Ward is largely a regional commercial center and bedroom community for central Kawasaki and Tokyo.

[3] Other industries include factories operated by Mitsubishi Fuso[citation needed] and NEC.