Beta Sigma Rho (ΒΣΡ) was a social fraternity founded on October 12, 1910, at Cornell University.

[1] Its founders were: Beta Samach was notable for a lack of initiation fees and dues and was slow to establish a constitution, ritual or the other surface attributes standard to other fraternal organizations.

By the end of its first decade, growing pressure on the Fraternity's trustees by its members resulted in the establishment of a structure of dues and fees, along with a constitution and new operational program.

[2] During the fraternity's approximately 62-year history, it eventually chartered chapters at fifteen colleges, including two in Canada.

[1] The fraternity gradually removed religious requirements from its governing documents, reflecting this change in its ritual in 1950.