Bratko Menaion (Братков минеј) is a 13th-century Serbian liturgical calendar book (menaion), written Serbian Orthodox monk-scribe by the name of Bratko. It is the oldest menaion in Serbian literature, written in the Serbian recension of Old Church Slavonic (Old Serbian). The menaion was discovered in the village of Banvani Fragments of a poem of Saint Naum of Ohrid (ca 830-910) is in the book.