|Alt names||Histria||source: Princeton Encyclopedia of Classical Sites (1979)|
|Istria||source: Atlas Istoric (1971) map 35; Cambridge World Gazetteer (1988); Columbia Lippincott Gazetteer (1961); Princeton Encyclopedia of Classical Sites (1979); USBGN: Foreign Gazetteers; Webster's Geographical Dictionary (1984)|
|Istrian Peninsula||source: Canby, Historic Places (1984) I, 426|
|Istrie||source: BHA, Authority file (2003-)|
|Istros||source: Princeton Encyclopedia of Classical Sites (1979)|
- source: Getty Thesaurus of Geographic Names
- source: Family History Library Catalog
- the text in this section is copied from an article in Wikipedia
Istria (Croatian, Slovene: Istra, Istrian Slovenian dialect: Jistra, Čakavian: Istrija, Jistra, ; German: Istrien; Italian: Istria; Istriot: Eîstria), formerly Histria (Latin), is the largest peninsula in the Adriatic Sea. The peninsula is located at the head of the Adriatic between the Gulf of Trieste and the Bay of Kvarner. It is shared by three countries: Croatia, Slovenia, and Italy.
Istra is a general region.