Dzong architecture (from Tibetan རྫོང་, Wylie rDzong, sometimes written, Jong) is a distinctive type of fortress architecture found in the present and former Buddhist kingdoms of the Himalayas: Bhutan and Tibet. The architecture is massive in style with towering exterior walls surrounding a complex of courtyards, temples, administrative offices, and monks' accommodation.

Distinctive features include:

Dzongs serve as the religious, military, administrative, and social centers of their district. They are often the site of an annual tsechu or religious festival.

The rooms inside the dzong are typically allocated half to administrative function (such as the office of the penlop or governor), and half to religious function, primarily the temple and housing for monks. This division between administrative and religious functions reflects the idealized duality of power between the religious and administrative branches of government.

The territory of Tibet used to be divided into 53 prefecture districts also called Dzongs. There were two Dzongpöns for every Dzong - a lama (Tse-dung) and a layman. They were entrusted with both civil and military powers and are equal in all respects, though subordinate to the generals and the Chinese Amban in military matters, until the ambans' expulsion following the fall of the Qing Dynasty in 1912. Today, 71 counties in Tibet Autonomous Region are rendered as "Dzongs" in the Tibetan language.