List of Heads of State 666

Overview
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Other events

America

• Maya
  • Caracol
    • Ruler : K'ak 'Ujol K'inich II. (658–680)
  • Copan
    • Ruler : Rauch Imix (628–695)
  • Palenque
    • Ruler : K'inich Janaab Pakal I (615–683)
  • Tikal
    • Ruler : Nuun Ujol Chaak (around 650–679)

Asia

• Bagan
  • King : Peitthon (652–710)
• China
  • Emperor : Tang Gaozong (649–683)
• Iberia (Kartlien)
  • King : Adarnase II. Patrikios (650–684)
• India
  • Chalukya
    • King : Vikramaditya I (655–680)
  • Eastern Chalukya
    • King : Jayasimha I (641–673)
  • Pallava
    • King : Narasimha Varman I (630–668)
• Japan
  • Emperor : Tenji (661-672)
• cashmere
  • King : Pratapaditya (661–711)
• Empire of the Khmer
  • King: Jayavarman I (657-681)
• Korea
  • Goguryeo
    • King : Bojang (642–668)
  • Silla
    • King : Munmu (661–681)
• Caliphate of the Muslims
  • Caliph : Muʿāwiya I (661–680)
• Tibet
  • King : Mangsong Mangtsen (649–676)

Europe

• Byzantine Empire
  • Emperor : Konstans II. (641–668)
• England ( heptarchy )
  • Bernicia
    • King : Oswiu (642–670)
  • Deira
    • King : Ecgfrith (664–670)
  • East Anglia
    • King : Ealdwulf (664–713)
  • Essex
    • King : Sighere (664–690) and Sebbi (664–694)
  • Kent
    • King: Ecgberht I (664-673)
  • Mercia
    • King : Wulfhere (658–675)
  • Northumbria
    • King : Ecgfrith (670–685)
  • Wessex
    • King : Cenwalh (648-672)
• Longobard Empire
  • King : Grimoald (662–671)
  • Autonomous Lombard Duchies:
    • Duke of Benevento : Romuald I (662–687)
    • Duke of Friuli : Arnefrid (664–666)
    • Duke: Wechtar (666–670)
    • Duke of Spoleto : Transamund I (663–703)
• Frankish Empire
  • Neustria
    • King of Neustria and Burgundy : Chlothar III. (657-673)
    • Hausmeier: Ebroin (656–681)
  • Austrasia
    • King: Childerich II. (662–675)
    • Hausmeier : Wulfoald (662–680)
  • Autonomous areas:
    • Duke of Baiern : Theodo I (640–680)
    • Duke of Thuringia : Heden I (642–687)
• Scotland
  • Dalriada
    • King : Domangart II (660–673)
  • Strathclyde
    • King : Elfin (around 658–693?)
• Wales
  • Gwynedd
    • King : Cadwaladr Fendigaid ap Cadwallon (655–682)
• Visigoth Empire
  • King : Rekkeswinth (653–672)

Religious leaders

• Pope : Vitalian (657-672)
• Patriarch of Constantinople: Petros (654–666)