Olaf Nicolai (born 1962 in Halle an der Saale) is a German conceptual artist.
His works were shown at documenta in 1997 and at the Venice Biennale in 2001, 2005 and 2015. He has been awarded various grants and fellowships, for example from Villa Massimo, Rome (1998) and from Villa Aurora, Los Angeles (2007). Since the early 1990s, Nicolai has participated in numerous international solo and group exhibitions at important crossroads of contemporary arts. Several of his works can be found in public collections, such as the Museum of Modern Art, New York and at the Friedrich Christian Flick Collection, Berlin.
He lives and works in Berlin.