2020
Hans Kotter - Hans Kotter at the Museum of Applied Art, Cologne 2020: Selections De Buck Gallery New York City, NY, United States
Hans Kotter / Light – Colour – Space, MAKK - Museum für Angewandte Kunst, Köln/Cologne, Germany

2019
Luminous Infinity, LH2 Contemporary Berlin, Germany
2018
Mehr Licht! Stern-Wywiol Galerie, Hamburg, Germany
Hans Kotter | Luminous Infinitygalerie | michaela | stock, Wien/Vienna, Austria

2017
Point of View, Patrick Heide Contemporary Art, London, United Kingdom

2015
Hans Kotter - Beyond Light, Bildraum 07, Wien / Vienna, Austria

Hans Kotter - Lichtkunst, Kunstverein Lippe - Lippische Gesellschaft für Kunst, Detmold, Germany

2014
Hans Kotter - Light Flow, Galerie Nery Mariño, Paris, France

Hans Kotter: ...Interruption, De Buck Gallery, New York City, NY, United States

2013
Hans Kotter: Mehr Licht, Schafhof - Europäisches Künstlerhaus Oberbayern, Freising, Germany

Hans Kotter - Superposition - Lichtinstallationengalerie | michaela | stock, Wien / Vienna, Austria

Hans Kotter - Light Flow, Osthaus Museum Hagen, Hagen, Germany

Hans Kotter, Syracuse University Art Galleries, Syracuse, NY, United States

Hans Kotter - Werke in der Rotunde, Osthaus Museum Hagen, Hagen, Germany

2012
In the Flux, Galerie Nmariňo, Paris, France
2011
Light Sensitive, De Buck Gallery, New York City, NY, United States
Light Flow, Patrick Heide Contemporary Art, London, United Kingdom
point of view, Priveekollektie, Heusden aan de Maas, Netherlands
Hans Kotter - Deflection, Studio d´Arte Contemporanea Pino Casagrande, Rom / Rome, Italy
2010
Transformation, Priveekollektie, Heusden aan de Maas, Netherlands
2009
Replaced, Patrick Heide Contemporary Art, London, United Kingdom
Hans Kotter - replaced / Lichtinstallationgalerie | michaela | stock, Vienna, Austria
2008
Balance, Kinetica - Museum of Kinetic Art, London, United Kingdom
colour rush, Lausberg Contemporary, Toronto, ON, Canada
2007
Hans Kotter - Colour Rush, Patrick Heide Contemporary Art, London, United Kingdom
2006
Hans Kotter - Chromatic Impulse - Lightboxes and Photographs, Patrick Heide Contemporary Art, London, United Kingdom
Licht am Main, Bestregarts, Frankfurt/Main, Germany
2004
Hans Kotter - Raum für Kunst,  Kunstverein Ravensburg, Ravensburg, Germany
Hans Kotter - Macrolightscapes, Patrick Heide Contemporary Art, London, United Kingdom
Hans Kotter - Illuminations, Aedes, Berlin, Germany
2003
Lichtecht, Patrick Heide Contemporary Art, London, United Kingdom
2002
beauty in plastic, Stadtmuseum Neuötting, Neuötting, Germany
Hans Kotter: Licht und Farbe, Galerie Bezirk Oberbayern, München / Munich, Germany
2001
Hans Kotter - blue line, Pasinger Fabrik, München / Munich, Germany
1999
Hans Kotter - Stillleben, Galerie Rainer Klimczak, Viersen, Germany
1998
Hans Kotter - Spurensicherung, Städtische Galerie Waldkraiburg, Waldkraiburg, Germany