Istro-Romanian is an Eastern Romance language that is still spoken today in a few villages and hamlets in the peninsula of Istria, on the northern part of the Adriatic Sea, in what is now Croatia as well as in other countries around the world where the Istro-Romanian people settled after the two world wars, most notably in Italy, the U.S.A. Canada, Argentina, Australia, Sweden, Germany, and other countries. Before the 20th century, it was spoken in a substantially broader part of northeastern Istria surrounding the Ćićarija mountain range (ancient Mons Carusadius) all the way up to Trieste. Its remaining speakers call themselves Vlahi (a name given to them by Slavs), as well as Rumunski, Rumeni, Rumeri, Rumunji, as well as Ćići and Ćiribiri (this last being a nickname that was previously used disparagingly to identify the Istro-Romanian language, not its speakers).
The Istro-Romanians today are labeled today into two groups: the Ćići around Žejane (denoting the people on the north side of Mt. Učka) and the Vlahi around Šušnjevica (denoting the people on the south side of Mt. Učka (Monte Maggiore). However, despite distinctions and interjection of words from other languages which varies from village to village, their language is otherwise linguistically identical.