Theta Chi fraternity has chartered 245 chapters, of which 157 are active as of 2015. www.thetachi.org Its first 24 chapters were given single Greek letter designations (Αlpha, Βeta, etc.), and all following chapters were given double Greek letter designations (Αlpha Beta, Αlpha Gamma, etc.) with no use of double letters (no Αlpha Alpha, Βeta Beta, etc.).
