Sigma Alpha Mu is a college fraternity founded at the City College of New York in 1909. Though initially founded as a Jewish organization, the fraternity dropped its religious affiliation and became open to men of all faiths in 1953. In the following list of Sigma Alpha Mu chapters, active chapters are indicated in bold and inactive chapters and institutions are in italics.
The national office forced all four Canadian chapters to cease operations or disaffiliate from the fraternity during the period between August 2006 to August 2008. Delta Pi chapter at the University of Ottawa informed the Octagon (national board) that its American insurance provider failed to comply with Canadian law in 2005. They requested permission to secure an alternative and equivalent Canadian provider. Their request was denied in August 2006 and their charter was revoked. Delta Omicron chapter at York University and Delta Kappa chapter at the University of Western Ontario were forced to shut down in 2007 due to , which was a direct consequence of the National insurance issue.
By 2008, the Chi chapter at McGill University was the only surviving Canadian chapter. It demanded that the national office allow Delta Pi chapter's 2005 appeal and establish a Canadian insurance alternative pursuant thereto. It further demanded that the national office act to quash the Octagon's 2006 expulsion order issued against the Delta Pi chapter. The national office offered to consider the former but rejected the latter out of hand. Chi chapter responded by ceasing all financial transfers to Indianapolis. The national office subsequently ordered the Chi chapter to cease operations in August 2008. However, the Chi chapter refused to comply and has continued to operate notwithstanding the order. In 2012, the Delta Pi chapter was reinstated and is once again active at the University of Ottawa.