Phi Beta Pi
Phi Beta Pi medical fraternity is a professional fraternity founded March 10, 1891, at the West Pennsylvania Medical College as an anti-fraternity society. It was originally known as Pi Beta Phi but changed its name because of an existing sorority with the same name.
The only remaining chapter presides at The University of Texas Medical Branch in Galveston, Texas. This chapter continues fraternity traditions of achieving academic excellence, promoting mentorship, organizing events for the student body, and providing charity outreach to the community.
Its badge is a diamond of gold with emerald points and pearl edges. A black enamel center with gold skull and pelvis and the letters "ΦΒΠ."
Phi Beta Pi chapters
Below is a list of Phi Beta Pi chapters.| Chapter | Institution | Dates | Notes |
| A | University of Pittsburgh | 1891-? | |
| B | University of Michigan | 1898-? | |
| Γ | Starling-Ohio Medical College | 1900–1905 | |
| Δ | Rush Medical College | 1901-? | |
| Ε | McGill University | 1901–1908 | |
| Ζ | Baltimore College of Physicians and Surgeons | 1901-? | |
| Η | Jefferson Medical College | 1902-? | |
| Θ | Northwestern University | 1902-? | |
| Ι | University of Illinois | 1902-? | |
| Κ | Detroit College of Medicine | 1903-? | |
| Λ | St. Louis University | 1903-? | |
| Μ | Washington University | 1903-? | |
| Ν | Kansas City University Medical College | 1904-? | |
| Ξ | University of Minnesota | 1904-? | |
| Ο | Indiana University | 1905-? | Combined with Alpha Zeta to make Omicron Alpha Zeta |
| Π | University of Iowa | 1905-? | |
| Ρ | Vanderbilt University | 1906-1944 | |
| Σ | University of Alabama | 1906-? | |
| Τ | University of Missouri | 1906-? | |
| Υ | Western Reserve University | 1906–1911 | |
| Φ | University College of Medicine | 1906-? | |
| Χ | Georgetown University | 1906-? | |
| Ψ | Medical College of Virginia | 1906-? | |
| Ω | Cooper Medical College | 1906-? | |
| ΑΑ | Creighton Medical College | 1907-? | |
| ΑΒ | Tulane University | 1907-? | |
| ΑΓ | Syracuse University | 1907-? | |
| ΑΔ | Medico-Chirurgical College absorbed by University of Pennsylvania | 1907-? | |
| ΑΕ | Marquette University | 1907-? | |
| ΑΖ | Indiana University | 1908-? | |
| ΑΗ | University of Virginia | 1909-? | |
| ΑΘ | University of Pennsylvania | 1909-? | |
| ΑΙ | University of Kansas | 1910-? | |
| ΑΚ | University of Texas | 1910–Present | |
| AM | University of Louisville | pre-1921-? |
Omega Upsilon Phi fraternity merged into Phi Beta Pi 1934. All active chapters became active chapters of Phi Beta Pi except Alpha which joined Phi Chi Medical Fraternity.
Theta Kappa Psi fraternity merged in 1961.