Barry Wellman FRSC (born 1942) is a Canadian-American sociologist and is the co-director of the Toronto-based international NetLab Network. His areas of research are community sociology, the Internet, human-computer interaction and social structure, as manifested in social networks in communities and organizations. His overarching interest is in the paradigm shift from group-centered relations to networked individualism. He has written or co-authored more than 300 articles, chapters, reports and books. Wellman was a professor at the Department of Sociology, University of Toronto for 46 years, from 1967 to 2013, including a five-year stint as S.D. Clark Professor.