Guelph (disambiguation)

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