Hamilton ( /ˈhæməltən/; 2006 population 504,559; UA population 647,634; CMA population 692,911) is a port city in the Canadian province of Ontario. Conceived by George Hamilton when he purchased the Durand farm shortly after the War of 1812, Hamilton has become the centre of a densely populated and industrialized region at the west end of Lake Ontario known as the Golden Horseshoe. On January 1, 2001, the new City of Hamilton was formed through the amalgamation of the former city and the other constituent lower-tier municipalities of the Regional Municipality of Hamilton-Wentworth with the upper-tier regional government. Residents of the old city are known as Hamiltonians. Since 1981, the metropolitan area has been listed as the ninth largest in Canada and the third largest in Ontario.

Hamilton is home to the shared Royal Botanical Gardens, the Canadian Warplane Heritage Museum, the Bruce Trail, McMaster University and Mohawk College. The Canadian Football Hall of Fame can be found downtown right beside Hamilton City Hall and across town to the east, the Canadian Football League's Hamilton Tiger-Cats play at Ivor Wynne Stadium.

Partly because of its diverse environment, numerous TV and film productions have been filmed in Hamilton, regulated by the Hamilton Film and Television Office. A growing arts and culture sector garnered media attention in a 2006 Globe and Mail news article, entitled "Go West, Young Artist," which focused on the growing art scene in Hamilton. The article highlighted local art galleries, recording studios and independent film production.