Diocese of Amyclae

The Diocese or Bishopric of Amyclae is a defunct Latin and Orthodox episcopal see and suppressed Latin Catholic titular bishopric in the Peloponnese, in peninsular Greece.

The see of Amyclae dates to 1082, when the Bishopric of Lacedaemon was raised to the rank of a Metropolitan see, and authorized to form three suffragan sees at Amyclae, Pissa (probably encompassing Kynouria) and Ezeroi. Despite its name, the new bishopric was not located at ancient Amyclae, a town near Sparta, but rather on the site of ancient Tegea in Arcadia, which through some unclear process had received the name of Amyklion (later usually shortened to Amykli and Nikli) by the 10th century. The bishopric of Amyclae was thus regarded as the successor of the long-defunct see of Tegea, attested as late as the Fourth Ecumenical Council in 451, but later abandoned, like much of Arcadia, as a result of the Slavic incursions of the late 6th century. The only known bishop of the see's early period is Nicholas Mouzalon in the second half of the 12th century.

Nikli and the rest of Arcadia were captured by the Crusaders in circa 1206–09, becoming part of the new Frankish Principality of Achaea, which soon came to encompass most of the Peloponnese. The Chronicle of the Morea depicts Nikli as a site of some importance and fortified, which fell to the Crusaders only after a siege.

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