Iao Theatre, Historic theater in Wailuku, United States.

The Iao Theatre is a theater building in Wailuku designed with Spanish Mission style architecture featuring red roof tiles and decorative details. The structure holds seating for about 400 guests and underwent substantial renovation work to restore its original character.

Manuel Gomes Paschoal and H. B. Weller broke ground on Market Street in December 1927; architect Edward Walsh designed the theater, which opened on August 22, 1928, after nearly nine months and $40,000 in construction costs. It closed in the early 1980s and faced demolition, but Maui County bought the site and building for $882,000 in July 1993 and spent $1.8 million on a partial restoration. It was listed on the Hawaii State Register on June 24, 1994, and the National Register on February 9, 1995.

The theater's name comes from the ʻiao, a small bait fish. Since 1984 it has been occupied by Maui Community Theater, which from 2002 has operated as Maui OnStage, staging Broadway-style musicals, concerts, stand-up comedy and film screenings. Local Hawaiian musicians Kealiʻi Reichel and Amy Hanaialiʻi Gilliom gained early experience on its stage.

The theater stands on Market Street in downtown Wailuku, with a 43-space parking lot behind the building, added in 2005. Air conditioning was installed in 2009. It is used for Broadway-style musicals, films, concerts, stand-up comedy, acting classes and conferences, so check what is on before visiting.

The theater's name comes from the ʻiao, a small bait fish, not from the nearby ʻĪao Valley. Its snack counter, Harry's Sweets, stood just outside the main entrance and was run by Harry Kaya for over forty years, from 1930 to the mid-1970s.