Niagara Centre (French: Niagara-Centre; formerly Welland) is a federal electoral district in the Niagara Region of Ontario that has been represented in the House of Commons of Canada from 1867 to 1988 and since 1997.

Ethnic groups: 92.2% White, 2.9% Aboriginal, 1.5% Black
Languages: 82.3% English, 7.3% French, 3.4% Italian
Religions: 76.6% Christian (40.4% Catholic, 8.5% Anglican, 7.3% United Church, 3.3% Presbyterian, 1.9% Baptist, 1.8% Lutheran, 1.3% Pentecostal, 12.1% Other), 21.8% No religion
Median income (2010): $28,573
Average income (2010): $35,416

Niagara Centre consists of the cities of Welland, Thorold, and Port Colborne, and the part of the City of St. Catharines lying south of a line drawn from the southern city limit north along First Louth St, east along St. Paul Street West, northeast along St. Paul Crescent, east and south along Twelve Mile Creek, and east along Glendale Avenue to the eastern city limit.

Welland was originally created in 1867 by the British North America Act. It consisted initially of the Townships of Bertie, Crowland, Humberstone, Stamford, Thorold, and Willoughby, and the Villages of Chippawa, Clifton, Fort Erie, Thorold and Welland.

In 1892, the riding was redefined to exclude reference to the Village of Clifton, and include the villages of Niagara Falls and Port Colborne, and the town of Niagara Falls. In 1903, it was redefined to consist of the county of Welland.

In 1952, it was redefined to consist of the townships of Pelham, Thorold, Crowland, Humberstone and Wainfleet, including the city of Welland and the towns of Port Colborne, Thorold, Fonthill and Humberstone.

In 1966, it was redefined to consist of:

In 1976, it was redefined to consist of the City of Welland, the Town of Thorold, and the part of the City of St. Catharines lying south of the Canadian National Railway.

The electoral district was abolished in 1987 when it was redistributed between Welland—St. Catharines—Thorold, St. Catharines and Erie ridings.

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