Wellington was an electoral riding in Ontario, Canada.

It started as Wellington North in 1867 but was abolished in 1879 after only three terms.

It was re-established as Wellington Northeast in 1926 and then changed to Wellington North in 1934 which existed until 1955 when it became Wellington-Dufferin.

The name was changed again in 1975 to become Wellington-Dufferin-Peel.

In 1987 it underwent its final name change to Wellington until 1999 when it was abolished into Waterloo—Wellington before the 1999 election.