Posted in Business & Finance, Health & Medicine, Science ZTO stands for Zeta Tau Omega (sorority; est. 1999) ZTO stands for Zinc Tin Oxide ZTO stands for Zentrum fur Technische Orthopadie (German: Center for Technical Orthopedics) ZTO stands for Zaklad Techniki Odpylania (Polish: Department of Dust Removal Technology) ZTO stands for Zambezi Times Online (news website; Zambia) ZTO