Holiday greetings are a selection of greetings that are often spoken with good intentions to strangers, family, friends, or other people during the months of December and January. Holidays with greetings include Christmas, New Year's Day, Thanksgiving (in the USA), and (more recently) Hanukkah, Ramadan, Kwanzaa, and in some cases Festivus in the United States. Some greetings are more prevalent than others, depending on the cultural and religious status of any given area.

Typically, a greeting consists of the word "Happy" followed by the holiday, such as "Happy Hanukkah" or "Happy New Year", although the phrase "Merry Christmas" is a notable exception. In the United States, the collective phrase "Happy Holidays" is often used as a simple way to refer to all of the winter holidays, or to the three major American holidays of Thanksgiving, Christmas Day, and New Year's Day. Some controversy has arisen regarding the phrase "Happy Holidays" as an alleged attempt to diminish Christmas although its use promotes other holidays commonly celebrated in the United States.