Superior has various meanings:

• A superior is a person who has the authority to command another, as in "a superior officer". See: Superior (function)
• In a hierarchical structure of any kind, a superior is higher in the hierarchy and thus closer to the apex than the subordinate ones. See: Superior (hierarchy)
• Lake Superior is the largest of the Great Lakes between the United States of America and Canada

Superior is also the name of several places in the United States of America:

• Superior, Arizona
• Superior, Colorado
• Superior, Iowa
• Superior Township, Chippewa County, Michigan
• Superior Township, Washtenaw County, Michigan
• Superior, Montana
• Superior, Nebraska
• City of Superior, Wisconsin
• Town of Superior, Wisconsin
• Village of Superior, Wisconsin
• Superior, Wyoming

Some inhabitants of the Upper Peninsula of Michigan have proposed seceding from Michigan to form the a new U.S. state called Superior , although such proposals are not taken very seriously and are mostly seen as a joke.