Flenucleta was an ancient Berber, Roman and Byzantine civitas located in the Mediterranean hinterland of what was then the province of Mauretania Caesariensis. It was situated in present-day northern Algeria.Flenucletensis at catholic-hierarchy.org. The exact location of the city is unknown.Titular Episcopal See of Flenucleta at GCatholic.org.

Flenucleta was also the seat of the Catholic Church diocese of FlenucletaAnnuario Pontificio 2013 (Libreria Editrice Vaticana, 2013, ), "Sedi titolari", pp. 819-1013 which goes back to a Roman era bishopric in the ancient town of the same name. Although the diocese ceased to effectively function with the Muslim conquest of the Maghreb, the diocese has been re-established in name at least as a titular see of the Roman Catholic Church. Titular Episcopal See of Flenucleta at GCatholic.org.Annuario Pontificio 2013 (Libreria Editrice Vaticana, 2013, ), "Sedi titolari", pp. 819-1013Pius Bonifacius Gams, Series episcoporum Ecclesiae Catholicae, (Leipzig, 1931), p.465.Stefano Antonio Morcelli, Africa christiana, Volume I, (Brescia, 1816), p.157.

Known bishops Felice (fl.484) Julien Le Couëdic Emeritus Bishop of Troyes (France) 21 February 1967 – 10 December 1970Revue des Ordinations Épiscopales, Issue 1944, Number 2. Antoine Mayala ma Mpangu Coadjutor bishop of Kisantu (Zaïre) August 30, 1971 – 27 April 1973 Nicholas Mang Thang, Auxiliary bishop in Mandalay (Burma) 21 June 1988 – 21 November 1992 João Braz de Aviz Auxiliary Bishop of Vitória (Brazil) 6 April 1994 – 12 August 1998 Hélio Adelar Rubert Auxiliary Bishop of Vitória (Brazil) 4 August 1999 – 24 March 2004 Joseph Walter Estabrook Auxiliary Bishop of the US Military Directorate (United States) 7 May 2004 – 4 February 2012 Le Petit Episcopologe, Issue 176, Number 14,649.Le Petit Episcopologe, Issue 212, Necrology (back) Nil Jurij LuschtschakLe Petit Episcopologe, Issue 213, Number 17,644 Auxiliary bishop in Mukacheve (Ukraine) November 19, 2012

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