The Wheel of the Year is an annual cycle of seasonal festivals, observed by many modern Pagans. It consists of either four or eight festivals: either the solstices and equinoxes, known as the "quarter days", or the four midpoints between, known as the "cross quarter days"; syncretic traditions like Wicca often celebrate all eight festivals.

The festivals celebrated by differing sects of modern Paganism can vary considerably in name and date. Observing the cycle of the seasons has been important to many people, both ancient and modern, and many contemporary Pagan festivals are based to varying degrees on folk traditions.