Reformhaus (German pronunciation: [ʁeˈfɔʁmˌhaʊ̯s] ⓘ; "reform house") is a type of German retail store that specializes in groceries and personal care products according to the principles of the 19th-century Lebensreform movement, for example the products are vegetarian, often (but not necessarily) organic, and free of synthetic preservatives.

In English-speaking countries, this particular form of retail shop is usually called a health food store.

To counter this development, a new flagship store with a larger floor area and product selection was opened in Frankfurt.

[4] In 1956, the Reformhaus-Fachakademie was founded in Oberursel, an education center that serves both aspiring Reformhaus owners and their staff and the wider community.

The center offers seminars on topics such as nutrition, traditional Chinese medicine, and ecology.