Guelph is a city in Ontario, Canada.

Guelph may also refer to:

• Guelph (federal electoral district), consisting of the City of Guelph, Ontario
• Guelph (provincial electoral district), as the above
• University of Guelph, in the same city
• House of Welf, also known as the House of Guelph, a European noble family
• Guelphs and Ghibellines, political factions in medieval Italy
• Guelph Treasure, a collection of German medieval art
• The Guelph Party, an alternative name for the German-Hanoverian Party, a historical conservative political party in the German Empire and the Weimar Republic

This disambiguation page lists articles associated with the title Guelph.
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