The Augustiner Museum is a museum in Freiburg im Breisgau, Germany located in the former Augustinian Monastery building. It is undergoing an extensive renovation and expansion, the first phase of which ended in 2010.

The museum is located in a former Augustinian monastery which was rebuilt between 1914 and 1923. The First World War not only interrupted the rebuilding but also severely restricted it compared to the original plans, due to lack of funds. The current total renovation, which is planned to include the addition of new exhibitions rooms, began in 2004. The museum's collection, which was begun by the city of Freiburg in the 1880s, can be only partially exhibited due to the building work.

The visual art and sculpture collection includes works by Lucas Cranach the Elder, Anselm Feuerbach, Hans Baldung Grien, Matthias Grünewald, the Master of the Housebook, Hans Thoma, and Franz Xaver Winterhalter. There is also a sculpture hall with four-metre-high stone prophets from Freiburg Cathedral, a church organ from Welte & Sons with an exterior from the 1730s, and a library of art and cultural history. The Museum of Municipal History (Museum für Stadtgeschichte) is a department of the Augustiner Museum.

The collections that are not on display, or only partially, include a large collection of prints and drawings, decorative art, domestic artefacts from the Black Forest region, collections of coins and timepieces, and a 14th-century carpet.

In 2010 the museum did not make it to the final stage of the Awards for Innovative Developments in Tourism by the British Guild of Travel Writers, but came in sixth.

Since 2004 a general reconstruction of the building site has been taking place. Christoph Mäckler, an architect from Frankfurt, was instructed with the planning. The duration of the reconstruction was originally planned to be 5 to 8 years. Until 2010, during first construction phase, the church building was reconstructed. First, archeological excavations as well as measures to stabilize the church building took place. The roof truss, which was heavily infested with wood preservatives, fungi and other pests, was disinfected, decontaminated and taken off in 2007. The damaged parts were restored. In the summer of 2009 the roof truss was straightened up again and put onto the rest of the building. During this time, the church building was a large construction site. By installing an elevator, the building is now barrier free. This also facilitates the transport of the exhibits. Circular galleries were installed. Additional exhibition space was created in the basement floor to provide for special shows for all of Freiburg's museums. In the attic there is now room for a painting gallery. A café was opened in the former treasury as well as the cloister, which both are on the main floor.

In June 2010, the exhibition hall was opened. In cooperation with the Museum of Modern Arts in Freiburg, the opening was celebrated with a double exhibition of the works by Katharina Grosse and her mother Barbara.

Many of the exhibits can't be shown for spatial and preserving reasons even after the end of the first stage of redevelopment in March 2010. This is why e.g. the section of everyday culture and folklore can't be exhibited yet and the craftwork section is still very fragmentary. This state of repair will remain until the third stage of redevelopment is completed.