Williamsville is the name of some places:
United States of America Williamsville, Kent County, Delaware Williamsville, Sussex County, Delaware Williamsville, Illinois Williamsville, Cass County, Michigan Williamsville, Livingston County, Michigan Williamsville, Missouri Williamsville, Nevada (Ragtown) Williamsville, New York Williamsville, Vermont Williamsville, Virginia Williamsville (Studley, Virginia), a historic house
Other Williamsville, Cote D'Ivoire Williamsville, Dublin, Ireland Williamsville, Kingston, Ontario Williamsville, Trinidad and Tobago