A lectionary is a book or listing that contains a collection of scripture readings appointed for Christian or Jewish worship on a given day or occasion. There are sub-types such as a "gospel lectionary" or evangeliary, and an epistolary with the readings from the New Testament Epistles.

The Evangeliary or Book of the Gospels is a liturgical book containing only those portions of the four gospels which are read during Mass or in other public offices of the Church. The corresponding terms in Latin are Evangeliarium and Liber evangeliorum.