The Pugu Forest Reserve is a forest reserve in Pwani Region, Tanzania. It is in the Pugu Hills area, near Dar es Salaam, adjacent to the Kazimzumbwi Forest Reserve. Together with Kazimzumbwi, the Pugu Forest (previously known as Mogo Forest) is part of what is considered to be one of the oldest forests in the world. The area is characterized by a large variety of endemic species of animals and plants.