Dunnville is an unincorporated community located near the mouth of the Grand River in Haldimand County, Ontario, Canada, near the historic Talbot Trail.

Dunnville is currently constructing a new Farmers Market Pavilion, providing more protection from the elements while helping to support what the local farming has to offer (heating may still be an issue).

The former World War II RCAF Training Base, the Dunnville Airport, offers a unique window on history with its massive hangars and runways.

The Grand River and nearby Lake Erie offers aquatic activities including swimming, sailing, windsurfing, canoeing and features prime locations for fishing.

Dunnville is also the site of one of Ontario's largest expanses of provincially significant wetlands where bird watching and nature photography are popular activities.

Smuckers Foods of Canada Co., which operates the Bick's Pickle Plant (Dunnville's largest factory), employs a small percentage of the town's population, mainly students.

In 2001, Bick's head office facility in Scarborough, Ontario was shut down, and operations were transferred to the Dunnville location, where it remained until the end of November 2011, at which point it closed.