An HMO is a health maintenance organization, an organization that provides or arranges managed care.
HMO or hmo may also refer to:
Codes IATA code for Hermosillo International Airport, in Hermosillo, Mexico ISO 639 code for Hiri Motu language, an official language of Papua New Guinea
Science Hermanus Magnetic Observatory, the former name of SANSA Space Science, South Africa Hückel molecular orbital method, a simple method for the determination of electron energies Human milk oligosaccharide, a family of structurally diverse unconjugated glycans Methyl orange (HMo), an acid–base indicator
Others House in multiple occupation, a residential building housing unrelated people