Betty Glamann Voorhees (May 21, 1923 – September 3, 1990) was an American jazz harpist.
Glamann learned to play harp at the age of ten.
She attended a conservatory and was the harpist for the Baltimore Symphony Orchestra for three years.
With Kenny Dorham's band she recorded the album Jazz Contrasts in 1957.
In 1958, she was involved in a Michel Legrand recording session with John Coltrane and Miles Davis; she played with Eddie Costa in 1958 and with the Modern Jazz Quartet in 1960.