Leaf peeping is an activity that one might partake in during autumn in areas where the foliage changes colors. It is the act of admiring autumn foliage for its beauty. A person who leaf peeps is called a leaf peeper.

This activity was lampooned in the animated television show Family Guy in the episode Lethal Weapons in which leaf peepers were humorously satirized as the dreaded "Leafers!!". It was also mocked in season two of The West Wing in the episode "And It's Surely to Their Credit" in President Bartlet's weekly radio address.