UMS may refer to:
Medicine Ulnar–mammary syndrome, a skin condition characterized by underdevelopment of the apocrine and mammary glands
Science, technology and business Underwriting management system, for automated insurance underwriting Unified messaging (system, server, or service), integration of different electronic messaging technologies into a single interface accessible from a variety of different devices Universal Media Server, a DLNA interoperable and Universal Plug and Play application software that seamlessly makes digital media available over a network Universal measurement system used for gross tonnage in shipping USB mass storage device class, a set of protocols for making a USB device accessible to a host computing device and enable file transfers User-mode scheduling, see preemption (computing)
Companies and sports Universal Media Studios, an American television production company Universal Mobile Systems, an Uzbek–Russian telecommunications company UMS 1905 or Union Makes Strength, an Indonesian football club
Countries Unfederated Malay States, former British protected states in the Malay Peninsula United Mexican States, the official name of Mexico
Education Uniform Mark Scheme, way of standardising the marking of papers across different examination boards Muhammadiyah University of Surakarta (Universitas Muhammadiyah Surakarta) in Indonesia Universiti Malaysia Sabah in Malaysia University of Maine System, a U.S. state university system consisting of eight universities University of Mississippi in the U.S.