Slavs
Standardised Slavic languages that have official status in at least one country are: Belarusian, Bosnian, Bulgarian, Croatian, Czech, Macedonian, Montenegrin, Polish, Russian, Serbian, Slovak, Slovene, and Ukrainian.
Croatian language
Besides the Shtokavian dialect, on which Standard Croatian is based, there are two other main dialects spoken on the territory of Croatia, Chakavian and Kajkavian. These dialects, and the four national standards, are usually subsumed under the term "Serbo-Croatian" in English, though this term is controversial for native speakers, and paraphrases such as "Bosnian-Croatian-Montenegrin-Serbian" are therefore sometimes used instead, especially in diplomatic circles.