Illuminator may refer to:

A light source Limner, an illustrator of manuscripts Illuminator radar The Illuminator, a political art collective based in New York City Illuminator (Marvel Comics), a Christian superhero appearing in American comic books by Marvel Comics Illuminator (title), an Eastern Orthodox saint title

People Gregory the Illuminator (250s–330s) Euthymius the Illuminator (950s–1020s) Saint Sava (1169/1174–1235/1236), known as the Illuminator of the Serbs

See also Illuminate (disambiguation) Illuminated (disambiguation)