The study investigates the motivation to participate in food movements, as well as the activities and knowledge regarding food waste of active food movement members in Germany. The study builds on theories of social movements. A total of 25 in-depth interviews with activists of the Slow Food organization, the Food Sharing organization, and with dumpster divers were recorded, transcribed, and analyzed through qualitative content analysis. Participation in the movements rests upon instrumental, ideological, and identificational motivations. The knowledge of food waste differs between the three movements. Sharing, food waste, and tendencies of anti-consumerism play a strong role in all movements.