129 named features carry the IAU descriptor Crater — a circular depression, almost always an impact scar on Ganymede, out of 4,787 in the mapped Solar System.
The IAU assigns each feature class on each world a naming theme. Across the 129 craters with a recorded origin, 12 categories appear, led by Egypt.
Every one has its own page, on the surface it sits on.
The same descriptor is used on 12 other worlds, for 4,658 more features.