The national park idea has spread around the world.  Some of these sites are maintained by the federal governments of each country.  Others are maintained by individuals, non-profit organizations, schools, universities or businesses in the tourism industry.

 Africa
Algeria - Tassili National Park
Botswana - National Game Parks
Kenya - Amboseli National Park
Kenya - National Parks and Reserves
Namibia - Etosha National Park
South Africa - Kapama Private Game Reserve
South Africa - Kruger National Park
South Africa - MontEco Nature Reserve
South Africa - National Parks
South Africa - Tembe Elephant Park
Swaziland - Mbuluzi Game Reserve
Tanzania - Gombe Stream National Park
Tanzania - Kilimanjaro National Park
Tanzania - National Parks
Tanzania - Ngorongoro Conservation Area

Asia
China - The Friends of China's National Parks
China - Wuling Yuan
China - Scenery of Wuling Yuan
China - Natural Scenic Guidebook
India - Corbett National Park
India - Corbett National Park
India - Kanha National Park
India - Nagarhole National Park
India - Rajaji National Park
India - Ranthambore National Park
India  - Ranthambore  National Park and Tiger Preserve
India - Sanjay Gandhi National Park (formerly Borivilin)
India - Sanjay Gandhi National Park
India - Thekkady Tiger Trail
Indonesia - Komodo National Park
Japan - Daisetsuzan National Park
Japan - Hakone and Ito
Japan - Nara Park
Japan - National Park Hakone
Korea (South) - Hallasan National Park
Korea (South) - National Parks of Korea
Malaysia - National Parks
Nepal - Lake Rara National Park
Nepal - Langtang National Park
Nepal - Langtang National Park
Nepal - Makalu-Barun National Park
Nepal - Mt. Everest National Park
Nepal - Royal Chitwan National Park
New Zealand - Cornwall Park
New Zealand - Kahurangi National Park
New Zealand - Abel Tasman National Park
New Zealand - Wai-O-Tapu
Sarawak - National Parks
Singapore - Parks
Sumatra - Bukit Lawang/Gunung Leuser National Park
Taiwan - Yangmingshan National Park
Thailand - Khao Yai National Park
Thailand - Phuket National Park

Australia
Australia's National Parks
Australian Capital Territory National Parks
Belair National Park
Kakadu National Park
Moreton Island National Park
New South Wales National Parks
Noosa National Park
Northern Territories Parks and Reserves
Queensland National Parks
Tasmania Parks and Wildlife Service

Europe
Austria - Neusiedler See - Seewinkel
Croatia - Plitvicka Jezera National Park
Estonia - Nigula Nature Reserve
Finland's National Parks
France - Le Verdon Regional Nature Park
France - Gorges du Verdon
France - Nature Parks
Germany - National Parks and Nature Parks
Ireland - Doneraile Wildlife Park
Ireland - Killarney
Italy - National Parks
In Italian.  Includes map and links to each park.
Lithuania - Nature Parks
Netherlands - Arikok National Park
Poland - National Parks
Spain - Cabrera National Park
Spain - Donana National Park
Spain - Marshes Natural Park
United Kingdom - Keider
United Kingdom - London's Royal Parks
United Kingdom - Red Rose Forest

Middle East
Israel - National Parks

North America
Belize - Laughing Bird Caye National Park
Canada - Parks Canada
Links to all nationally protected areas in Canada
Canada - Algonguin National Park
Canada - Banff National Park
Central America National Parks
Costa Rica - National Parks
Guatemala - Tikal National Park
Mexico - Beaches of Cabo
Mexico - National Parks and Reserves
Mexico - Maderas del Carmen Reserve
Mexico - Parks and Protected Areas
Mexico - Xcaret

South America
Argentina - Tierra del Fuego National Park
Argentina - Los Glaciares National Park
Argentina - Nahuel Huapi National Park
Argentina - Parque Nacional Iguazú
Bolivia - Madidi National Park
Brazil - Iguacu National Park
Chile - Torres del Paine National Park
Chile - Lauca National Park
Ecuador - Cotopaxi National Park
Ecuador - Galapagos National Park
Peru - Huascaran National Park
Peru - Manu National Park
Venezuela - Canaima National Park
Venezuela - National Parks