The common giant parasol, parasol or giant parasol mushroom (Macrolepiota procera) is a species of mushroom in the mushroom family Agaricaceae.
Due to frequent ambiguities in species delimitation in the genus of giant parasol mushrooms, the data may contain inaccuracies. The common giant umbrella mushroom has an Australian to boreal distribution. It has been recorded in the Americas, Europe, Africa, Asia, and Australia. In the Americas, the range extends from Canada to Chile. In Africa, it is found in Kenya and Madagascar, and in North Africa. In Asia, the species is distributed from Siberia and eastern Russia to Japan, as well as in India. In Europe, apart from the Arctic regions, it can be found everywhere. In Germany, the fungus is widespread and nowhere rare.