Oppidum, a Latin word meaning the main settlement in any administrative area of ancient Rome
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Oppido Mamertina, Italian municipality of the Province of Reggio Calabria, Calabria
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Oppido Lucano, Italian municipality of the Province of Potenza, Basilicata
Das Stadtrecht von Bantia (1853), on the tablet discovered in 1790 at Oppido near Banzi, containing a plebiscite relating to the municipal affairs of the ancient Bantia (the Stadtrecht)