The Paradise garden is a form of garden, originally just paradise, a word derived from the Avestan language, or Old Persian. Its original meaning was a walled-in compound or garden; from pairi (around) and daeza or diz (wall, brick, or shape). The name has come to be commonly used in English and other European languages as an alternative for heaven. Because of the additional meanings for the word, the enclosed garden of the original concept is now often referred to as a paradise garden.

This garden form became the foundation of much of the garden traditions of Persia and the Middle East, and later on of Europe. Examples of the paradise garden and its derivatives can be seen today in many of the historic gardens of Islamic and European countries.

The paradise garden takes some of its character from its original arid or semi-arid homeland. The most basic feature is the enclosure of the cultivated area. This excludes the wildness of nature, and includes the tended, watered greenery of the garden. The commonest and easiest layout for the perimeter walls is that of a rectangle, and this forms one of the prime features of this kind of garden. Another common theme is the elaborate use of water, often in canals, ponds or rills, sometimes in fountains, less often in waterfalls of various kinds. The rectangular or rectilinear theme of the garden is often extended to the water features, which may be used to quarter the garden. This layout is echoed in the four rivers of the Garden of Eden, and much of the use and symbolism of the paradise garden is derived from this connection.

The contrast between a formal garden layout with the informality of free-growing plants provides a recurring theme to many paradise gardens.