List of ancient place names and geographical names / Os
| Latin name |
Greek name |
description | today | Sources and References | location
|
|---|---|---|---|---|---|
| Osca | Ὄσκα (Oska) | City of Ilergeten in Tarraconensis, Hispania | Huesca in Spain | Smith (1) ; | |
| Osca | Ὄσκα (Oska) | City of Turdetans in Hispania Baetica | Smith (2) ; | ||
| Oscela | Smith ; | ||||
| Osci | Ὄπικοι (Opikoi) | Italic people of the Oscars | Settlement areas in Campania | Smith ; | |
| Oscineium | Smith ; | ||||
| Oseriates | Smith ; | ||||
| Osi | Illyrian people of the Oser | Smith ; | |||
| Osiana | Smith ; | ||||
| Osismi , Osismii | Ὀσίσμιοι (Osismioi) | Celtic tribe in Aremorica | Smith ; | ||
| Osismis | see Gesocribate | ||||
| Osmida | Smith ; | ||||
| Osphagus | Smith ; | ||||
| Osquidates | Smith ; | ||||
| Osrhoene | Landscape in northern Mesopotamia | Smith ; | |||
| Ossa | Ὄσσα (Ossa) | Mountain in Thessaly | Smith (1) ; | ||
| Ossa | Ὄσσα (Ossa) | Mountain in Elis , near Olympia | Smith (2) ; | ||
| Ossa | Ὄσσα (Ossa) | City of the Bisalter in northern Macedonia | Ptol. 3,13,35; Smith ; | ||
| Ossadiae | Smith ; | ||||
| Ossarene | Smith ; | ||||
| Osset | Smith ; | ||||
| Ossigerda | Smith ; | ||||
| Ossigi Laconicum | Smith ; | ||||
| Ossonoba | Ὀσσόνοβα (Ossonoba) | City of the Turdetans in Lusitania | Faro in Portugal | Smith ; | |
| Osteodes | Smith ; | ||||
| Ostia | Ὠστία (Ōstia) | Port of rome | 5 km upstream from today's mouth of the Tiber | Smith ; | |
| Ostiaei | Smith ; | ||||
| Ostippo | Smith ; | ||||
| Ostra | Ὄστπα (Ostpa) | City in Umbria | Ostra Vetere in the Italian province of Ancona | Smith ; | |
| Ostracina | Smith ; | ||||
| Ostracina | Smith ; | ||||
| Ostudizus | Smith ; | ||||
| Ostur | Smith ; |