The largest fraternity and sorority on your campus

[PhoenixAzul]

All of ours are local, so i don't know if this counts but.....

Fraternity
1. Pi Kappa Phi (not the national, founded before the national PiKapPhi, but share the letters) on our campus we call them Country Club
2. Sigma Delta Phi (Sphinx)
3. Lambda Gamma Epsilon (Kings)

Sorority
1. Kappa Phi Omega
2. a tie between Tau Epsilon Mu and Theta Nu
3. either Sigma Alpha Tau (Owls) or Epsilon Kappa Tau

Smallest:
Fraternity
1. Zeta Phi or Eta Phi Mu

Sorority:
1. Tau Delta (it's quality, not quantity!)

EDIT!~ These chapters can all be found at Otterbein College in Westerville Ohio