ʻEwa Beach or simply ʻEwa is a census-designated place (CDP) located in ʻEwa District and the City & County of Honolulu along the coast of Māmala Bay on the leeward side of Oʻahu in Hawaii. As of the 2010 Census, the CDP had a total population of 14,955. The U.S. postal code for ʻEwa Beach is 96706.

Honolulu County, officially known as the City and County of Honolulu, is a consolidated city-county in the U.S. state of Hawaii. The city-county includes both Urban Honolulu and the rest of the neighborhoods on the island of Oʻahu, as well as several minor outlying islands, including all of the Northwestern Hawaiian Islands except Midway Atoll.