Michael Portnoy (b. 1971, Washington, DC, USA) is a New York-based artist. Coming from a background in dance and stand-up comedy, his performance-based work employs a variety of media: from participatory installations to film, sculpture, theater, writing and curation. Portnoy is largely concerned with manipulating language and behavior as a tool for world-bending – either in his "Relational Stalinist" game structures in which confusion, complication, and ambiguity are used to stretch participants' speech and movement; or his quest to "improve" existing breeds of art through re-engineering. He has presented internationally in museums, art galleries, theatres and music halls, including recently Steirischer Herbst, Graz, Austria (2023, 2019, 2018); Witte de With, Rotterdam, the Netherlands (2016); the Centre Pompidou, Paris, France (2015); Stedelijk Museum, Amsterdam, the Netherlands (2014); Cricoteka, Krakow, Poland (2014); Palais de Tokyo, Paris, France (2013); KW Institute for Contemporary Art, Berlin, Germany (2013); The Kitchen, New York, USA (2013); dOCUMENTA 13, Kassel, Germany (2012); 11th Baltic Triennial (co-curator), Vilnius, Lithuania (2012); and the Taipei Biennial, Taipei, Taiwan (2010).