Haldimand County is a rural city-status single-tier municipality on the Niagara Peninsula in Southern Ontario, Canada, on the north shore of Lake Erie, and on the Grand River. Despite its name, it is no longer a county by definition, as all municipal services are handled by a single level of government. Municipal offices are located in Cayuga.

The Niagara Peninsula is an area of land lying between the southwestern shore of Lake Ontario and the northeastern shore of Lake Erie, in Ontario, Canada. Technically an isthmus rather than a peninsula, it stretches from the Niagara River in the east to Hamilton, Ontario, in the west. The peninsula is located in the Golden Horseshoe region of Southern Ontario, and has a population of roughly 1,000,000 residents. The region directly across the Niagara River and Lake Erie in New York State is known as the Niagara Frontier.