MOMus Modern, in full MOMus–Museum of Modern Art–Costakis Collection (Greek: MOMus-Μουσείο Μοντέρνας Τέχνης-Συλλογή Κωστάκη), is a modern artmuseum based in Thessaloniki, Central Macedonia, Greece. It is housed in the renovated building of the old Lazariston Monastery in the Borough of Stavroupoli in west Thessaloniki. It was formerly known as the State Museum of Contemporary Art (SMCA, Greek: Κρατικό Μουσείο Σύγχρονης Τέχνης, ΚΜΣΤ).
Its initial collection was formed by a large part of the famous Costakis Collection, acquired by the Greek state on 31 March 2000 for 14,200,000,000 drachmas.
Since 2018, the museum has merged with MOMus Contemporary, MOMus Photography, MOMus Museum Alex Mylona and other institutions under the Metropolitan Organisation of Museums of Visual Arts of Thessaloniki (MOMus) umbrella.
The Centre of Contemporary Art of Thessaloniki, which used to be a self-contained department of the museum, is now known as MOMus Experimental or MOMus–Experimental Center for the Arts. It is housed in Warehouse B1, Pier A, at the Port of Thessaloniki.
The museum's founding mission is to preserve and display works of contemporary art by Greek and foreign artists, to improve the public's aesthetic appreciation and art education, to develop scientific research into issues surrounding the history and theory of contemporary art, as well as to assist art historians and theoreticians who wish to specialize in museology.
As well as maintaining its collections, the museum organizes permanent and temporary exhibitions.
The museum also organizes temporary exhibitions. LIGHT in Art (artificial light, natural light, electric light, metaphysical light), BLACK in art, a pilot exhibition based on works by Kazimir Malevich and other artists were organized during 2002. The exhibitions Composition and Constructions, that referred to international Constructivism, and Nikitin and Kliun, with works from the Costakis collection, took place in 2003.
The museum's collections also contain two hundred works of art, paintings and sculptures, which were donated by the Cultural Capital 1997 Organization, and significant pieces of work donated to the museum by artists themselves. Notable among them are The Chapel of the Heavenly Stairway by Stylianos Antonakos, Gridlock by Chris Giannakos and Group of Four Figures by Joannis Avramidis,[3] all Greek artists of the diaspora.