The Edo-Tokyo Open Air Architectural Museum (江戸東京たてもの園, Edo Tōkyō Tatemono En, lit. "Edo Tokyo Buildings Garden") in Koganei Park, Tokyo, Japan, is a museum of historic Japanese buildings.

The park includes many buildings from the ordinary middle class Japanese experience to the homes of wealthy and powerful individuals such as former Prime Minister Takahashi Korekiyo, out in the open in a park.

The museum enables visitors to enter and explore a wide variety of buildings of different styles, periods, and purposes, from upper-class homes to pre-war shops, public baths (sentō), and Western-style buildings of the Meiji period, which would normally be inaccessible to tourists or other casual visitors, or which cannot be found in Tokyo.

Acclaimed animator Hayao Miyazaki often visited here during the creation of his film, Spirited Away, for inspiration.