Nicolas Calas (Greek: Νικόλαος Κάλας) (May 27, 1907 – December 31, 1988) was the pseudonym of Nikos Kalamaris (Νίκος Καλαμάρης), a Greek-American poet and art critic. While living in Greece, he also used the pseudonyms Nikitas Randos (Νικήτας Ράντος) and M. Spieros (Μ. Σπιέρος).