Phi Delta Theta

Phi Delta Theta (ΦΔΘ), commonly known as Phi Delt, is an international college social fraternity founded in 1848, and currently headquartered, at Miami University in Oxford, Ohio. Phi Delta Theta, along with Beta Theta Pi and Sigma Chi form the Miami Triad. The fraternity has over 200 active chapters and colonies in over 44 U.S. states and five Canadian provinces and has initiated more than 310,000 men between 1848 and 2024. There are over 180,000 living alumni. Phi Delta Theta chartered house corporations own over 135 houses valued at over $141 million as of summer 2015. There are nearly 100 recognized alumni clubs across the U.S. and Canada. Among the best-known members of the fraternity are Benjamin Harrison, the 23rd President of the United States, Vice President Adlai Stevenson I, chief justice of the United States Fred M. Vinson, Baseball Hall of Fame member Lou Gehrig, actor Burt Reynolds, architect Frank Lloyd Wright, astronaut Neil Armstrong, and John S. McCain Sr., U.S. Navy Admiral and grandfather of John McCain, and William A. McCain, brother of John S. McCain Sr.