The Ullen Sentalu Museum (Indonesian: Museum Ullen Sentalu; Javanese: ꦩꦸꦱꦶꦪꦸꦩ꧀ꦈꦭ꧀ꦭꦺꦤ꧀ꦱꦼꦤ꧀ꦠꦭꦸ, romanized: Musiyum Ullèn Sentalu) is a Javanese culture and art museum located in Kaliurang highland, Sleman Regency, Special Region of Yogyakarta, Indonesia.

The museum displays relics and artifact from royal houses and kratons of Java, such as Yogyakarta, Pakualam, Surakarta, and Mangkunegaran.

It was established in 1994 and officially inaugurated on March 1, 1997, coinciding with the date commemorated every year as a historical day for Yogyakarta City.

The inauguration was done by KGPAA Paku Alam VIII, who was at that time the Governor of Yogyakarta Special Province.

Paku Buwono XII of Kasunanan Surakarta Hadiningrat, KGPAA Paku Alam VIII of Pakualaman Principality, GBPH Poeger - Son of Sultan HB VIII - , GRAy Siti Nurul Kusumawardhani - daughter of Mangkunegara VII - , Hartini Sukarno - wife of the late President Sukarno - , and KP.