The Metropolitan Organisation of Museums of Visual Arts of Thessaloniki – MOMus is a museums' network compised by the Museum of Modern Art, the Museum of Contemporary Art, the Thessaloniki Museum of Photography, the Experimental Center for the Arts and the Museum Alex Mylona. MOMus is a Legal Entity of Private Law based in Thessaloniki and is under the supervision of the Hellenic Ministry of Culture.

The Organisation's long-term goals through its programmes as a contemporary art entity in Thessaloniki, in Greece and abroad, are the dynamic development and promotion of visual arts, photography and industrial and architectural design, the dynamic promotion of art education, the dynamic development of historical and scientific studies and research, providing support to experimental and alternative art initiatives, the osmosis of the arts and the continuous interaction with the society.

The MOMus was founded in 2018 from the merger of four Thessaloniki-based museums/art venues (the State Museum of Contemporary Art, the Macedonian Museum of Contemporary Art, the Thessaloniki Museum of Photography and the Contemporary Art Center of Thessaloniki) and the Athens-based Museum Alex Mylona.