Grethe Clemmensen (born 17 June 1938 - died 18 August 1990) was a Danish singer later known by her married name Grethe Ingmann
. She made her debut in 1955 as a temporary member of Malihini Hawaiians
before she was discovered by Jørn Grauengaard
and joined his band. She was married to Jørgen Ingmann
from 1956 until their divorce in 1975.