Marian hymns are Christian songs focused on Mary, mother of Jesus. They are used in both devotional and liturgical services, particularly by the Roman Catholic, Eastern Orthodox, Oriental Orthodox, Anglican, and Lutheran churches. They are often used in the month of May devotions. Some have also been adopted as Christmas hymns. Marian hymns are not popular among some Protestants, as they see Marian veneration as idolatry. However, the practice is very common among Christians of Catholic traditions, and a key component of the Eastern Orthodox liturgy. There are many more hymns to Mary within the Eastern Orthodox yearly cycle of liturgy than in Roman Catholic liturgy.

Mary was a first-century Jewish woman of Nazareth, the wife of Joseph and the mother of Jesus. She is a central figure of Christianity, venerated under various titles such as virgin or queen, many of them mentioned in the Litany of Loreto. The Eastern and Oriental Orthodox, Church of the East, Catholic, Anglican, and Lutheran churches believe that Mary, as mother of Jesus, is the Mother of God. Other Protestant views on Mary vary, with some holding her to have lesser status.