Hawaii's 1st congressional district is a congressional district in the U.S. state of Hawaii. The district is entirely on the island of Oahu, encompassing the urban areas of the City and County of Honolulu, a consolidated city-county that includes Oahu's central plains and southern shores, including the towns of Aiea, Mililani, Pearl City, Waipahu, and Waimalu. The district is smaller and more densely populated than the 2nd congressional district. It is represented by Democrat Ed Case.

Edward Espenett Case is an American lawyer and Democratic politician. Since 2019, he has served as the U.S. representative for Hawaii's 1st congressional district, which covers the urban core of Honolulu. He represented the 2nd district, which covers the rest of the state, from 2002 to 2007.