The Pugu Forest Reserve is a forest reserve in Pwani Region, Tanzania. It is located 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 number of endemic species of animals and plants.