ZEGG (Zentrum für experimentelle Gesellschaftsgestaltung or Center for Experimental Cultural Design) is an ecovillage located on the outskirts of Bad Belzig, Germany, about 80 km (50 mi) south-west of Berlin.

It is an intentional community and an international seminar centre aiming to develop and implement practical models for a socially and ecologically sustainable way of living. To do this, it integrates personal growth work, the establishment of a cooperative and environment-friendly way of living and participation in political issues. In particular, ZEGG focuses on exploring innovative approaches to love and sexuality and it has developed and practices the use of tools for personal expression and trust building in large groups, including the ZEGG Forum.

ZEGG was founded in 1991 on a 37-acre site (15 hectares), where approx. 100 people now live, including 15 children and youth (as of 2011). The facilities on site include: an ecological sewage plant, a CO₂-neutral heating system, organic vegetable garden, some clay buildings, a meditation room, artists’ studios, workshops, a guesthouse, the "Children’s Building" and a range of other rooms and facilities for events and seminars. Since 2015 ZEGG is recognized as a non-profit organization.