Sicilian Americans are Italian Americans who are fully or partially of Sicilian descent, whose ancestors were Sicilians who emigrated to United States during the Italian diaspora, or Sicilian-born people in U.S. They are a large ethnic group in the United States.

Italian Canadians are Canadian-born citizens who are fully or partially of Italian descent, whose ancestors were Italians who migrated to Canada as part of Italian diaspora, or Italian-born people in Canada. According to the 2021 Census of Canada, 1,546,390 Canadians claimed full or partial Italian ancestry. They comprise a subgroup of Southern European Canadians which is a further subgroup of European Canadians. The census enumerates the entire Canadian population, which consists of Canadian citizens, landed immigrants and non-permanent residents and their families living with them in Canada. Residing mainly in central urban industrial metropolitan areas, Italian Canadians are the seventh largest self-identified ethnic group in Canada behind French, English, Irish, Scottish, German and Chinese Canadians.