Rui Gil Moniz (formerly Rui Gil) was a Portuguese nobleman.
He was a son of Gil Aires and wife Leonor Rodrigues.
He was a Treasurer of the Casa da Moeda of Lisbon.
He married Filipa de Almada, daughter of João Vaz de Almada, Vedor of King Afonso V of Portugal, and wife Violante de Castro, and had: