The acronym SFGAm means Six Flags Great America. The term is commonly used on roller coaster fan-based forums and websites to refer to the park.

Six Flags Great America itself is also known to use the term occaisonally. The oldest known usage of "SFGAm" was on a 1997 employee map located in some of the break areas Backstage.

The "m" is added to "SFGA" to avoid confusion with New Jersey's Six Flags Great Adventure, which is abbreviated "SFGAdv".