Oyer or Øyer may refer to:
People Harvey Eugene Oyer Jr. (1926–2010), American businessman and civic leader Harvey Eugene Oyer III (born 1968), American author and attorney from West Palm Beach, Florida John S. Oyer (1925–1998), American anabaptist scholar and editor Paul Oyer (born 1963), American labor economist Places Øyer Municipality, a municipality in Innlandet county, Norway Øyer (village), a village within Øyer Municipality in Innlandet county, Norway Øyer Church, a church in Øyer Municipality in Innlandet county, Norway Oyer, Missouri, an unincorporated community in St. Clair County, in the U.S. state of Missouri
Other Oyer and terminer, a legal term Øyer-Tretten IF, a sports club based in Øyer Municipality in Innlandet county, Norway
See also Oyez, the interjection used to call a courtroom to order