Guelph (; Canada 2011 Census population 121,668) is a city in Southwestern Ontario, Canada. Known as "The Royal City", Guelph is roughly east of Waterloo and west of downtown Toronto at the intersection of Highway 6 and Highway 7. It is the seat of Wellington County, but is politically independent of it. Because of its low crime rates, clean environment and generally high standard of living, Guelph is consistently rated as one of the country's best places to live. in October 2011, Guelph was noted as having the lowest unemployment rate in the country at 4.1%.

Guelph [] ist eine kanadische Stadt und liegt im Südwesten Ontarios. Sie liegt ca. 100 km südwestlich von Toronto und hat 125.875 Einwohner (Stand 2004).

Guelph est une ville canadienne du sud-ouest de l'Ontario.

Guelph – miasto w Kanadzie, w prowincji Ontario, w hrabstwie Wellington.

Guelph è una città della provincia dell'Ontario in Canada.