The Museum of Ixelles (French: Musée d’Ixelles) is an art museum in Ixelles, Brussels, Belgium. The museum was founded in 1892 to house a collection of works donated by painter and collector Edmond De Pratere (1826-1888) and grew rapidly with donations from generous patrons. The Belgian art patron Octave Maus (1856-1919) donated more than 200 Impressionist, Neo-impressionist and symbolist works.

Today the museum presents a panorama of Belgian art of the 19th and 20th centuries. The collections bring together paintings, sculpture, and drawings representing the different art movements of this time. A sampling of Flemish masters and some representatives of foreign schools complete the set. A collection of posters includes a complete collection of originals by Toulouse-Lautrec.

The museum regularly organizes temporary exhibitions and has a documentation center.