Unionville

(See also the variant Union.)

Unionville may refer to:

Canada

 * , a community in Markham, Ontario
 * , a community in Markham, Ontario

United States

 * Unionville, Connecticut
 * , an unincorporated community in Massac County
 * , an unincorporated community in Vermilion County
 * , an unincorporated community in Whiteside County
 * , formerly known as Unionville
 * Unionville, Albany County, New York
 * Unionville, a hamlet in Potsdam (town), New York
 * Unionville, Sullivan County, New York
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * Unionville, Albany County, New York
 * Unionville, a hamlet in Potsdam (town), New York
 * Unionville, Sullivan County, New York
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * Unionville, a hamlet in Potsdam (town), New York
 * Unionville, Sullivan County, New York
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * in Lehigh County, historically called Unionville
 * , historic settlement now renamed Hoytsville, Utah
 * , historic settlement now renamed Hoytsville, Utah