Nikos Aliagas (Greek: Νικόλαος "Νίκος" Αλιάγας, Nikólaos "Níkos" Aliágas; born 13 May 1969) is a Greek-French journalist and entertainer, known for being the host of the French reality program Star Academy and The Voice – La plus belle voix.

Both of his parents, Andreas and Harula Aliagas are Greek. His father comes from the area of Stamna in Aetolia-Acarnania while his mother comes from Messolonghi, located in the same regional unit in Greece. He lived between France and Greece during his childhood.

He was a guest star on a Greek program Koita ti Ekanes in late-2003 and featured clips from Star Academy. He has published a book called I was born Greek: The mythology or The school of life (Greek: Γεννήθηκα Έλληνας: Η Μυθολογία Ή Το Σχολείο Της Ζωής). He was the presenter of a show on Alpha TV called Gros Plan where he met international stars like Celine Dion, Jean Paul Gaultier, Sylvester Stallone and Helena Paparizou.^[1] He is the French presenter of The Voice: la plus belle voix.

He is multilingual, being able to speak five languages.