Gergis is an Ancient city and former bishopric in Roman Libya, now a Latin Catholic titular see.
Its modern location in Zargis, in Libya.
Gergis was important enough in the Roman province of Tripolitania to become a suffragan bishopric, but was to fade.
The diocese was nominally restored in 1933 as a Latin Catholic titular bishopric .
It has had the following incumbents, of the lowest (episcopal) rank :
John van Sambeek, White Fathers (M. Afr.) (1936.11.19 – 1953.03.25)
Otàvio Barbosa Aguiar (1954.11.06 – 1956.02.24)
Luis Aníbal Rodríguez Pardo (1956.07.28 – 1958.05.22) as Auxiliary Bishop of Cochabamba (Bolivia) (1956.07.28 – 1958.05.22); previously Titular Bishop of Thennesus (1952.06.06 – 1953.06.17) & Auxiliary Bishop of Santa Cruz de la Sierra (Bolivia) (1952.06.06 – 1953.06.17), then Bishop of Oruro (Bolivia) (1953.06.17 – 1956.07.28); later last suffragan Bishop of Santa Cruz de la Sierra (Bolivia) (1958.05.22 – 1975.07.30), Military Vicar of Bolivia (Bolivia) (1961.07.26 – 1975.07.30), promoted first Metropolitan Archbishop of Santa Cruz de la Sierra (1975.07.30 – 1991.02.06), also President of Episcopal Conference of Bolivia (1980 – 1985)
Luigi Oldani (1961.10.31 – 1976.08.05)
Antonio María Rouco Varela (1976.09.17 – 1984.05.09) (later Cardinal*)
Patricio Infante Alfonso (1984.08.07 – 1990.12.12) (later Archbishop*)
Jurij Bizjak (2000.05.13 – 2012.05.26)
Sérgio de Deus Borges (2012.06.27 – ...), Auxiliary Bishop of São Paulo (Brazil)
