Uthayaan Haeng Chaat, literally ‘Park Of the Nation, is the Thai name for any National Park in the country, of which there are well over a hundred, divided into two types, i.e. National Parks, which are terrestrial, and National Marine Parks, located in sea.

All are listed in this Passport to Thailand National Parks, which  includes not only pictures of each park but also a space for the park's unique official stamp. These stamps serve as mementos, allowing visitors to collect a distinctive souvenir from each park they visit.