Merritton is both a distinct community within and a council ward of St. Catharines, Ontario, Canada. It was named after William Hamilton Merritt, a prominent local entrepreneur and founder of the Welland Canal Company. Until 1858, Merritton was named Welland City, but exchanged names that year with Merrittsville (Today's Welland City), when that town became the "seat" of Welland county.