Nikos Gatsos (Greek: Νίκος Γκάτσος; 8 December 1911 – 12 May 1992) was a Greek poet, translator and lyricist.
Nikos Gatsos was born in 1911 in Asea in Arcadia, a district of the Peloponnese, where he finished primary school (dimotiko). He attended high school (gymnasio) in Tripoli, where he became acquainted with literature and foreign languages. Afterwards, he moved to Athens, where he studied literature, philosophy, and history at the University of Athens for two years only. His knowledge of English and French was quite good and he was already familiar with Kostis Palamas, Dionysios Solomos, Greek folk songs, and recent trends in European poetry. In Athens, he came in contact with the literary circles of the day becoming one of the lifelong friends of fellow poet Odysseus Elytis and published his poems, small in extent and in a classic style, in the magazines Nea Estia (1931–32) and Rythmos (1933). During that period he also published criticism in Makedonikes Imeres (Μακεδονικές Ημέρες), Rythmos (Ρυθμός), and Nea Grammata (Νέα Γράμματα) (for Kostis Bastias, Myrtiotissa, and Thrasos Kastanakis, respectively).