Gelitin is an artist collective based in Vienna, composed of members Tobias Urban, Wolfgang Gantner, Florian Reither, and Ali Janka. The group—whose members met at summer camp in 1978 and began exhibiting together in the early 1990s—is best known for their sensationalist artistic happenings, which often take place in public spaces. Gelitin takes human relationships and social conditions as their point of departure, creating installations and staging performances that encourage human interaction or which rely on human interaction within the confines of the art project itself. 

Gelitin has had solo exhibitions at a number of notable institutions including the Schinkel Pavillon in Berlin, the Museum of Contemporary Art in Vienna, Musée d'Art moderne de la Ville de Paris,  Kunstraum Innsbruck, Kunsthaus, MoMA PS1, and the Institute of Contemporary Art in Sofia, Bulgaria. Gelitin represented Austria at the 2001 Venice Biennale, and was included in the Arsenale exhibition at the 2011 Venice Biennale.