Nikos Aliagas (Greek: Νίκος Αλιάγας / Nikós Aliágas; born Νικόλαος Αλιάγας / Nikólaos Aliágas on 13 May 1969 in Paris) is a Greek-French journalist and entertainer, known for being the host of the French reality program Star Academy.
His Greek parents are Andreas and Harula Aliagas. One of his parents came from the area of Stamna in Aetolia-Acarnania in Greece. He lived between France and Greece during 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. He's the French presenter of The Voice: la plus belle voix.