Hodogaya-ku (保土ケ谷区) is one of the 18 wards of the city of Yokohama in Kanagawa Prefecture, Japan.

As of 2010, Hodogaya Ward had an estimated population of 205,887 and a density of 9,400 inhabitants per square kilometer (24,000/sq mi).

Hodogaya Ward is located in eastern Kanagawa Prefecture, and near the geographic center of the city of Yokohama.

After the Meiji Restoration, the area was transferred to the new Kanagawa Prefecture, and Hodogaya Town was established on April 1, 1889, two years after the completion of Hodogaya Station on the Tōkaidō Main Line railway connecting Tokyo with Osaka.

Hodogaya Ward is largely a regional commercial center and bedroom community for central Yokohama and Tokyo.