Lesbi or Lesvi is a Roman Catholic titular bishopric in the former Roman Catholic province of Mauretania Sitifensis, suffragan of Sitifis, or Sétif, in modern Algeria. It is not, as is sometimes stated, the Island of Lesbos, which never was a titular bishopric, but possesses two titular archbishoprics: Mytilene and Methymna.
Of Lesbi we only know, from the "Itinerarium Antonini", that it was situated twenty-five miles from Tupusuctu or Tiklat, and eighteen miles from Horrea Aninici, now Ain-Roua, south of Béjaïa. The town, therefore, was on the Sava, i.e. the Oued-Bou-Sellam, but there are no remains to be seen.
Two of its bishops are recorded: Romanus, a Donatist, present at the convention of Carthage, 411; Vadius, a Catholic exiled by the Vandal King Huneric in 484.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed (1913). "Lesbi". Catholic Encyclopedia. Robert Appleton Company.