The flag of Hawaii was first adopted in the early 19th century by the Hawaiian Kingdom and continued to be used after its overthrow in 1893. It is the only U.S. state flag to feature a foreign country's national flag—that of the United Kingdom's Union Jack—which commemorates the Royal Navy's historical relations with the Kingdom of Hawaii, and in particular the pro-British sentiment of its founder and first ruler, King Kamehameha I.

Hawaii is an island state of the United States, in the Pacific Ocean about 2,000 miles (3,200 km) southwest of the U.S. mainland. It is the only state not on the North American mainland, the only state that is an archipelago, and the only state in the tropics.