The Pugu Hills Forest Reserve, officially listed as Pugu/Kazimzumbwi Nature Forest Reserve (Msitu wa Akiba wa Pugu, In Swahili) is a protected area located in Kisarawe ward of Kisarawe District in Pwani Region, Tanzania.

[2][3][4] The 22 km2 reserve extends over a large hilly area south-west of Dar es Salaam, the nearest populated place being Kisarawe.

[5] The source of the Msimbazi river, that flows into the Indian Ocean in the surroundings of Dar, is inside the reserve.

A large fraction of its vegetation is composed of evergreen plants, as rain is common and abundant throughout most of the year.

[6][7] There are also enormous bamboo stands, the lake Minaki, bat caves, overlooks of Dar es Salaam City, places of worship, sacred ritual sites, the unique Mpugupugu tree (from which the reserve derives its name).