I have co-organized the following conferences.

• Transformation Groups (Poznan, Poland in 1985)
• Algebraic Topology (Poznan, Poland in 1989),
• Poznan Workshop on Transformation Groups (Poznan, Poland in 2001, 2002, 2003, 2004)
• Group Action Forum Conference (Málaga, Spain in 2006 | Amherst, MA, USA in 2008 | Poznan, Poland in 2010 | Milan, Italy in 2010)
• Group Actions and Homogeneous Spaces (Bratislava, Slovakia in 2009)
• Knots, Manifolds, and Group Actions (Słubice, Poland in 2013)
• Glances@Manifolds (Kraków, Poland in 2015, 2016, 2018)