Greta may refer to:

Arts and entertainment

Film

* ''Greta'' (2018 film), a thriller film directed by Neil Jordan * ''Greta'' (2020 film), a documentary film about activist Greta Thunberg

Music

* Greta (band), hard rock band * Greta (song), a 2022 song by Gloria Groove

Natural history

* ''Greta'' (genus), butterfly genus in the family Nymphalidae ** '' Greta morgane'' (thick-tipped greta) ** '' Greta oto'' (glasswing)

People

* Greta (given name), including a list of people and characters with the name

Places

* Greta, New South Wales, town in Australia ** Greta railway station ** Greta Army Camp, former Australian Army camp near the town of Greta * Greta, Victoria, town in Australia

Other uses

* Group of Experts on Action against Trafficking in Human Beings, abbreviated GRETA * Hurricane Greta, name of several Atlantic storms * River Greta (disambiguation), one of three UK rivers