Gem City may refer to:
Gem, Indiana Gem, Kansas
It may also refer to any of the following cities which are known by the nickname Gem City:
Monrovia, California, the "Gem City of the Foothills" Quincy, Illinois Diamond, Missouri, the "Gem City of the Ozarks" Dayton, Ohio Toronto, Ohio Erie, Pennsylvania Lynden, Washington Laramie, Wyoming, the "Gem City of the Plains" Palatka, Florida, the "Gem City of the St. Johns River"
See also Gemcity