Wellington—Grey—Dufferin—Waterloo

Wellington—Grey, renamed Wellington—Grey—Dufferin—Waterloo in 1970, was a federal electoral district represented in the Canadian House of Commons from 1968 to 1979. It was located in the province of Ontario. This riding was created in 1966 from parts of Dufferin—Simcoe, Grey—Bruce, Waterloo North, Wellington South and Wellington—Huron ridings.

Wellington—Grey consisted of:

The electoral district was abolished in 1976 when it was redistributed between Bruce—Grey, Dufferin—Wellington, Grey—Simcoe, Guelph and Waterloo ridings.