Crossword clues for the word: IOLANI The word IOLANI has appeared as an answer to at least 10 crossword clues on different crossword puzzles. Crossword clues for IOLANI Showing 1 to 10 of 10 results Clue(s) Historic Hawaiian Palace Historic Honolulu palace Historic Honolulu palace that was used as police headquarters on Hawaii Five-O Historic island palace Honolulu palace Honolulu's ___ Palace Honolulu's historic ___ Palace Palace used as police headquarters on the original 'Hawaii Five-O' Royal residence in Hawaii The only royal palace in the U.S.