Geike Arnaert (Dutch pronunciation: [ˈɣɛikə ˈʔɑrnaːrt]; born 13 September 1979) is a Belgian singer, best known for being the lead vocalist of the band Hooverphonic from 1997 until 2008 and again since 2020.

From a young age she was captivated by music and therefore she decided to audition for the Belgian band Hooverphonic, the group of guitarist Raymond Geerts and Alex Callier.

[6] In November 2020, Hooverphonic announced that Arnaert would return to the band, also parting company with former lead vocalist Luka Cruysberghs.

[7] In 2010 Arnaert was brought together with Spinvis to work on the soundtrack of Breath (original title: Adem), a Belgian film about young people who suffer from mucovisidosis.

Having written more material than needed for the film, they released a record, calling themselves Dorleac for the project.

[8] Arnaert has also sung as a guest vocalist for various artists such as Ozark Henry, Flip Kowlier and Tom Helsen.

She contributed vocals to "Mijn Leven" ("My Life"), the final single by Belgian rapper Vijvenveertig (Andy Sierens).