Hawaiian is written with Latin script, except for one extra character, the ʻokina. The vowels aeiou in either upper or lower case may have a macron.
Hawaiian - ISO 639a: [not included]; NIZO Z39.53: haw
Resources: Languages: Natural: Austronesian: Malayo-Polynesian: Eastern: Hawaiian - Other: Ethnologue
Countries: United States [.us] (primarily in Hawaii, where it is an official language)