Edwin Mahiʻai (Mahi) Copp Beamer (December 5, 1928 – July 14, 2017) was an American tenor falsetto singer, composer and hula dancer of Hawaiian ancestry.

Beamer was the 1993 recipient of the David Malo award presented by Rotary International for his cultural contributions.

[3] He served in the United States Army during the post-World War II years at Schofield Barracks at Wahiawa on the island of Oahu, where he played classical piano and the glockenspiel.

In 1959, Beamer had an uncredited part as a singer in the Columbia Pictures movie Forbidden Island, which starred Jon Hall and was filmed on location in Hawaii.

Beamer performed at numerous venues in his home state of Hawaii, and recorded many of his grandmother's compositions.