Camp Mataponi (formerly known as Highland Nature Camps) is an all-girls sleepaway camp in Naples, Maine, United States for girls approximately 7 to 15 years old. Founded in 1910 by Eugene Lehman, the camp is situated on Sebago Lake and accounts for over 5,000 feet of lakefront property. Camp Mataponi has grown to accommodate about 330 campers. Originally, the camp was called Highland Nature Camps. In the 1940s, it was renamed to Camp Mataponi. The current directors of the camp are Marcy and Dan Isdaner.
Some activities at Camp Mataponi include: water sports, high ropes, baseball, archery, boating, and water trampoline.