Many of Canada's cities and communities are known by various aliases, slogans, sobriquets, and other nicknames to the general population at either the local, regional, national or international scales, often due to marketing campaigns and widespread usage in the media. Some nicknames are officially adopted by municipal governments, tourism boards or chambers of commerce while others are unofficial, and some are current while others are antiquated. Some nicknames are positive, while others are derisive, disparaging or derogatory.
City nicknames can help establish a civic identity, promote civic pride, build civic unity, market the community, and attract residents and businesses. They are also believed to have economic value, but their economic value is difficult to measure.