Welland—Thorold

Welland—Thorold is a former provincial electoral district in Ontario, Canada. It was created for the 1977 provincial election, and lasted until provincial redistribution in 1996. The riding was formally retired upon the calling of the 1999 provincial election.

Welland—Thorold was a bastion of strength for the Ontario New Democratic Party, which represented it throughout its existence. Its last Member of Provincial Parliament (MPP), Peter Kormos, continued to represent the successor riding of Niagara Centre (later Welland) in the Ontario legislature for several terms.