Christian era may refer to

• the time since Christianisation in any given regional context.
  • Early Christianity
  • decline of Greco-Roman paganism
  • Ancient Roman Christianity
  • Christianization of the Germanic peoples
  • Christianization of the Slavs
• in Christian eschatology, the age of the Church, between the age of Law and the Millennial age, see Dispensation (period)
• calendar eras: Calendar era#Christian era
  • the Dionysian era or Common Era used in Western Christianity
  • Etos Kosmou (Greek Orthodoxy)
  • Era of the Martyrs (Diocletian era)
  • Incarnation Era, see Ethiopian calendar
  • Armenian calendar era (AD 552, year of the Monophysite schism)