Wellington Street is a major street in Ottawa, Canada. It is notable for being the main street of the Parliamentary Precinct of the Parliament of Canada. It is one of the first two streets laid out in Bytown in 1826. The street runs from Vimy Place, just west of Booth Street, to the Rideau Canal where it connects with Rideau Street and delimits the northern border of the downtown core. It is named after the Duke of Wellington, in recognition of his role in the creation of the Rideau Canal, and therefore of Ottawa.

Bytown is the former name of Ottawa, Ontario, Canada. It was founded on September 26, 1826, incorporated as a town on January 1, 1850, and superseded by the incorporation of the City of Ottawa on January 1, 1855. The founding was marked by a sod turning, and a letter from Governor General Dalhousie which authorized Lieutenant Colonel John By to divide up the town into lots. Bytown came about as a result of the construction of the Rideau Canal and grew largely due to the Ottawa River timber trade. Bytown's first mayor was John Scott, elected in 1847.