Kahana Bay and Kahana Bay Beach Park are located on the windward side of the island of Oahu in the state of Hawaii.

[1][2] Kahana Bay and beach park is located along Kamehameha Highway on Oahu adjacent to Ahupua'a O Kahana State Park between Kaʻaʻawa and Punaluʻu.

[3] The area around Kahana, especially mauka (up hill), was historically a native Hawaiian fishing and farming community prior to Western contact.

Due to the abundant fresh water and fertile soil in the valley, the area was able to sustain a small population.

Kahana Bay was said to provide a sustainable supply of fish and shellfish.