Delta Zeta (ΔΖ) is an international college sorority founded on October 24, 1902, at Miami University in Oxford, Ohio. Today, Delta Zeta has 158 collegiate chapters in the United States and over 200 alumnae chapters in the United States, the United Kingdom, and Canada. In total there are over 220,000 college and alumnae members, making Delta Zeta the second largest sorority nationally and largest internationally.