How many national park are there in Tanzania safari tour?

They are 22 National Park of Tanzania safari.TANAPA manages the nation's 22 National parks which covers approximately 15% of the land area and has the order to conserve and manage the wildlife in Tanzania, and to enforce the connected laws and regulations in this industry. It manages the biodiversity of the country, protecting and preserving the flora and fauna.
The Tanzania National Parks Authority commonly known as TANAPA is responsible for the management of Tanzania's national parks. TANAPA is a parastatal corporation and all its income is reinvested into the organization. It is governed by a number of instruments including the National Parks Act, Chapter 282 of the 2002 and the Wildlife Conservation Act No. 5 of 2009. In Tanzania safari,TANAPA manages the nation's 22 National parks which covers approximately 15% of the land area and has the mandate to conserve and manage the wildlife in Tanzania, and to enforce the related laws and regulations in this industry. It manages the biodiversity of the country, protecting and conserving the flora and fauna. The organization does not have a mandate over the game reserves such as the Selous Game Reserve which is managed by the Tanzanian Wildlife Division and the Ngorongoro Conservation Area managed by the Ngorongoro Conservation Authority.

The Arusha Manifesto gave the initial foundation for the expansion of the Tanzanian National Park authority and an increase in protected areas in the country, as of December 2015 parks, reserves and conservation areas cover about 14% percent of the land. Currently TANAPA is governed by the National Parks Ordinance Chapter 282 of the 2002 and manages 22 national parks.
TANAPA manages 22 national parks covering an area of 99,306.50 km approximately the land area of Croatia. TANAPA is responsible for the following parks:

Arusha National Park
Burigi-Chato National Park
Gombe Stream National Park
Ibanda-Kyerwa National Park
Katavi National Park
Kigosi National Park
Kilimanjaro National Park
Kitulo National Park
Lake Manyara National Park
Mahale Mountains National Park
Mikumi National Park
Mkomazi National Park
Nyerere National Park
Ruaha National Park
Rubondo Island National Park
Rumanyika-Karagwe National Park
Saadani National Park
Saanane Island National Park
Serengeti National Park
Tarangire National Park
Udzungwa Mountains National Park,
Ugalla River National Park

It is TANAPA's first and foremost goal to protect the wildlife and natural resources living in the park and to ensure tourists do not cause damage to the ecosystem. The organization has received various contributions of vehicles and aircraft to help train rangers with modern technology and techniques.
In Tanzania safari, TANAPA also pays to preserve the park facilities for tourists and preservation activities such as Roads, Gates, Boundaries and Airstrips. TANAPA currently manages 26 airstrips throughout its network of national parks. Often forest fires break out in the parks and it is under TANAPA's mandate to put them out. The authority also has in place a Fire management plan executed yearly which help reducing number of damaging insect e.g. tsetse fly, help reduce the amount of litter that can catalyze a fire during dry season and also early burning of the grass helps facilitate new forage for animals.