Cetinje Octoechos
 The Cetinje Octoechos (Serbian: Цетињски октоих or Cetinjski oktoih) is an Orthodox liturgical book printed in 1494 in Cetinje the capital of the Principality of Zeta (in present-day Montenegro). It is the first incunabulum written in the Serbian recension of Church Slavonic as well as the first book printed in Cyrillic in Southeast Europe.