Julia Migenes (born March 13, 1949) is an American soprano working primarily in musical theatre repertoire. She was born on the Lower East Side of Manhattan to Juan and Julia Migenes, parents of Puerto Rican and Irish descent, respectively.

(Her stepfather, Costas Makis, was of Greek descent.) She is sometimes credited as Julia Migenes-Johnson. She attended The High School of Music & Art in New York City.