This list of Christmas carols is organized by country, language or culture of origin. Originally, a "Christmas carol" referred to a piece of vocal music in carol form whose lyrics centre on the theme of Christmas or the Christmas season.
Many traditional Christmas carols focus on the Christian celebration of the birth of Jesus, while others celebrate the Twelve Days of Christmas that range from 25 December to 5 January. As a result, many Christmas Carols can be related to St Stephen's Day (26 December), St John's Day (27 December), Feast of Holy Innocents (28 December), St Sylvester's Day (31 December), and the Epiphany. Examples of this are We Three Kings (an Epiphany song), and Good King Wenceslas (a carol for St. Stephen's Day). Nonetheless, some Christmas Carols, both religious and secular, now regarded as Christmas songs have become associated with the Christmas season even though the lyrics may not specifically refer to Christmas – for example, Deck the Halls (no religious references) and O Come, O Come, Emmanuel (an Advent chant). Other Christmas songs focus on more secular Christmas themes, such as winter scenes, family gatherings, and Santa Claus (Jingle Bells, O Christmas Tree, Home for the Holidays, Jolly Old St. Nicholas, etc.).