Helen Kapuailohia Desha Beamer (September 8, 1882 – September 25, 1952) was a musician, composer of songs in the Hawaiian language, hula dancer and coloratura soprano of Hawaiian ancestry. Her descendants also became accomplished artists in the U.S. and Hawaii. She was inducted into the Hawaiian Music Hall of Fame in 1995.

Helen Kapuailohia Desha was born in Honolulu, in the Kingdom of Hawaii. Her parents were George Langhern Desha and Isabella Hale'ala Miller. Her mother and grandmother, Kapuailohiawahine Kanuha Miller, taught hula in secret when the dance was banned from being performed publicly. Her grandmother was a notable hakumele, Hawaiian for composer of music. Helen was a graduate of Kamehameha School for Girls, where the school's music director noted her talent as a pianist and as a song composer. She was also the organist at Haili Church in Hilo.

Deshe had a coloratura soprano range and was a recording artist for Columbia Records. In 1928, she and artist Sam Kapu Sr. made the first commercial recording of the "Hawaiian Wedding Song," which was written by composer Charles E. King as "Ke Kali Nei Au". She was the composer of numerous songs in the Hawaiian language that are still being recorded by contemporary Hawaiian artists.

Helen Desha married Peter Carl Beamer of Hilo. The couple had five children. She was the matriarch of a musical dynasty that includes her grandson, falsetto singer Mahi Beamer, who was inducted into the Hawaiian Music Hall of Fame in 2006; granddaughter Winona (Nona) Beamer; and Nona Beamer's two sons, Keola and Kapono. She died in 1952 and is buried at Homelani Memorial Park in Hilo.