Phi Sigma Rho (ΦΣΡ), also known as Phi Rho or PSR, is a social sorority for individuals who identify as female or non-binary in science, engineering, and engineering technologies. The sorority was founded in 1984 at Purdue University. The first chapter of Phi Sigma Rho was installed on September 24, 1984, with 10 charter members. It has since expanded across the United States. Phi Sigma Rho Headquarters are located in Northville, Michigan. The sorority is actively expanding in the United States and Canada.