Phi Sigma is a college honor society for biological sciences. In the following chapter list, active chapters are indicated in bold and inactive chapters are in italics.
↑The institution's name in Spanish is Universidad Nacional Autónoma de México.
12The name of the Alpha Upsilon chapter on the Phi Sigma website had a typo at the creation of this page. Previously, a Gamma Kappa chapter was also listed at UCLA on the Society's website, but the Society's HQ reports this is an error that will be fixed. That designation has not been used and should be blank.
↑LIU's Brooklyn campus houses the Richard L. Conolly College of Liberal Arts & Sciences, home of the Dept. of Biology.
↑This chapter is at the historically Black university, not to be confused with Southern University College, Texas Southern University, or Sewanee: The University of the South.
↑There are several St. John's Universities; this chapter, is in New York City.