The Christmas carol initials game is a guessing game where players try to guess the name of the Christmas song or carol using the first letter of each word in the title. A variant of the game can include using the first letters of only the chorus.

There are two versions of the Christmas carol initials game. The first version uses only the first letter of each word in the title of the song or carol: for example, "JB" for "Jingle Bells." The second version exchanges the title for the chorus: for example, "JB, JB, JATW" for "Jingle bells, jingle bells, jingle all the way."

Regardless of which format is used, the rules of the game remain the same. The clues are written on pieces of paper before the game begins. Each party guest receives a sheet of paper with the clues listed, and the guests try to guess the title or chorus that the initials spell out. The player who gets the most right answers, or answers the fastest, is the winner.

All initials must be capitalized, no matter what word they stand for. Spaces can be placed between the letters to make longer sets of initials easier to read.