The Green Man is primarily interpreted as a symbol of rebirth, representing the cycle of new growth that occurs every spring. The Green Man is most commonly depicted in a sculpture, or other representation of a face which is made of, or completely surrounded by, leaves.

The Green Man motif has many variations. Branches or vines may sprout from the mouth, nostrils, or other parts of the face, and these shoots may bear flowers or fruit. Found in many cultures from many ages around the world, the Green Man is often related to natural vegetation deities. Often used as decorative architectural ornaments, Green Men are frequently found in carvings on both secular and ecclesiastical buildings. "The Green Man" is also a popular name for English public houses, and various interpretations of the name appear on inn signs, which sometimes show a full figure rather than just the face.

Some speculate that the mythology of the Green Man developed independently in the traditions of separate ancient cultures and evolved into the wide variety of examples found throughout history.