Ellie Noa Blanche Delvaux (French pronunciation: [eli nɔa blɑ̃ʃ dɛlvo]; born 10 June 1999), better known mononymously as Blanche [blɑ̃ʃ], is a Belgian singer and songwriter. She represented Belgium in the Eurovision Song Contest 2017 in Kyiv, Ukraine with the song "City Lights", finishing in fourth place. Blanche previously competed on season five of The Voice Belgique, where she was a member of Team Cats on Trees.

Ellie Delvaux was born in Belgium, on 10 June 1999. She is Jewish and speaks French, English, and Hebrew. As a child, she liked to sing to herself. She later attended musical theatre classes and took part in school performances. When she turned 16, she auditioned for The Voice. After Eurovision, she hoped to complete secondary school in Belgium.Her stage name, "Blanche", is her third name.