Gretta

Gretta may refer to:

People

 * Gretta Bowen (1880–1981), self-taught Irish artist
 * Gretta Chambers (1927–2017), Canadian journalist and former Chancellor of McGill University
 * Gretta Cohn, American cellist and radio producer
 * Gretta Duisenberg (born 1942), Dutch political activist
 * Gretta Kehoe-Quigley, former camogie player, captain of the All Ireland Camogie Championship
 * Gretta Kok (born 1944), retired Dutch breaststroke swimmer
 * Gretta Lange Bader (1931–2014), American sculptor
 * Gretta Pecl, Australian marine ecologist
 * Gretta Sarfaty Marchant, international artist and curator
 * Gretta Taslakian (born 1985), Lebanese sprinter of Armenian descent
 * Gretta Taylor (née Francis), musician and teacher from Trinidad and Tobago
 * Gretta Vosper (born 1958), Canadian minister, writer and leader within the Progressive Christianity movement