The Erol Tabanca and İdil Tabanca collections, which form the backbone of OMM, include artworks in various media. Spanning a wide range of decades and forms, the collection continues to expand and diversify in line with an innovative perspective. OMM houses selections from the İdil Tabanca and Erol Tabanca collections that contain a comprehensive array of post-1950 modern and contemporary art, as well as important examples of contemporary design.

OMM is home to works by established and up-and-coming artists, including Erol Akyavaş, Fahrelnissa Zeid, Ömer Uluç, Burhan Doğançay, Gülsün Karamustafa, Tayfun Erdoğmuş, Taner Ceylan, Şener Özmen, Şükran Moral, İnci Eviner, Canan Tolon, Guido Casaretto, Tunca Subaşı, Erinç Seymen, Burcu Yağcıoğlu, Mustafa Boğa, Jaume Plensa, Aron Demetz, Marc Quinn, Sarah Morris, Julian Opie, Max Lamb, Touche Touche, Ellissa Lacoste, Jonathan Trayte, and Chris Wolston.

To offer a dynamic and multi-perspective approach, OMM also hosts temporary solo and group exhibitions with works by local and international contemporary artists.