Sheffield (population 304) is a village and rural community in the single-tier municipality of Hamilton, Ontario. It is located just off Highway 8, on the municipality's boundary with the Region of Waterloo. It is ten kilometres from the city of Cambridge and thirty-five from Hamilton's downtown core. The village lay on the road between the two cities until 1959, when the Sheffield Bypass was completed. Ontario Highway 8 still follows the route of the bypass; the main street through Sheffield is now a 2.4 km section of municipal road known as Old Highway 8.
Local institutions include Dr. John Seaton Public School, Sheffield United Church, Zion United Reformed Church, Grace Covenant Church, and a Science of Spirituality Meditation Centre.
Local organizations include the Sheffield Lions Club, the Clyde & Scott's Women's Institute, and Sheffield Minor Ball, which uses the Sheffield Ball Park.
Local businesses include a garden centre (Sheffield Nursery), garage (Sheffield Automotive), farm supply store (Settlers Supplies), veterinary office (Troy Vet), golf course (Buncrana), local history museum (The Sheffield Museum), day spa (Simply Indulge Aesthetics) and a modern-day blacksmith (Sheffield Iron Works).
Located approximately two kilometres east of Sheffield is the Rockton Aerodrome, a private dirt airfield home to a local gliding club. The Sheffield Community Centre is located three kilometres south of the village in the former Pleasant Grove School.
Located approximately three kilometres north-east of Sheffield is a major tourist attraction, the African Lion Safari.
Sheffield had been settled by the early 1800s, and the village was founded by Rev. John A. Cornell, an immigrant from Dutchess County, New York who settled at the site in 1809. He became a preacher in 1812, founding the first church in Beverly Township. Church services were initially held in Cornell's barn and house, and in neighbouring communities. In 1834, a church was built by Cornell's congregation in Sheffield. The current United Church in Sheffield sits on the same site.