Pi Kappa Phi (ΠΚΦ), commonly known as Pi Kapp(s), is an American Greek Letter secret and social fraternity. It was founded by Andrew Alexander Kroeg Jr., Lawrence Harry Mixson, and Simon Fogarty Jr. on December 10, 1904 at the College of Charleston in Charleston, South Carolina. The fraternity has 187 active chapters (168 chartered chapters and 19 associate chapters), and more than 113,000 initiated members.