What is "hpo"

HPO may refer to:

• HPO formalism, an approach to temporal quantum logic
• Highway Post Office, of the United States Postal Service
• Homeowner Protection Office, in British Columbia, Canada
• Hpon language, spoken in Burma
• Human Phenotype Ontology
• Humanist Party of Ontario, a political party in Canada
• Hydrogen peroxide, an oxidizer
• Premnaspirodiene oxygenase, an enzyme
• Hippo, a protein kinase involved in the Hippo signaling pathway