Nicholas Kalliakis (Greek: Νικόλαος Καλλιάκης, Nikolaos Kalliakis;^[2] Latin: Nicolaus Calliachius; Italian: Niccolò Calliachi; c. 1645^[3] - 8 May 1707) was a Cretan Greek^[4] scholar and philosopher who flourished in Italy in the 17th century. He was appointed doctor of philosophy and theology in Rome,^[5] university professor of Greek and Latin^[6] and Aristotelian philosophy^[7] at Venice in 1666 and professor of belles-lettres^[8] and rhetoric^[9] at Padua in 1667.

Nicholas Kalliakis was born of Greek ancestry^{[10][11][12][13][14]} in Candia, Crete which was under control of Venice (present-day Greece) in 1645.^[15] He migrated to Rome where he stayed for ten years, becoming one of the outstanding teachers of Greek and Latin,^[16] he was ultimately made doctor of philosophy and theology.^[17] He moved to Venice in 1666 where he was appointed professor of Aristotelian philosophy^[18] and of the Greek and Latin languages.^[19] He was appointed Director of the Greek college (the Collegio Flangini) in Venice from 1665 to 1676.^[20] In 1677 Nicholas Kalliakis was invited to Padua and took the chair of professor of the belles-lettres^[21] and of philosophy and rhetoric.^[22] He wrote treatises on the antiquities of Greece and Rome and studied the dance in classical antiquity, his principal work is the De ludis scenicis mimorum et pantomimorum syntagma.^[23] He remained in Padua until 1707 where he died.^[24]

• Greek scholars in the Renaissance