Croatian, Serbian, Montenegrin, and Bosnian: A Beginner's Guide to Getting Started
Bosnian, Croatian, Montenegrin, and Serbian sit at the center of a long-running debate on whether they're one language or four. In this guide, we're taking a practical approach—a little history and a lot of actionable advice from someone who became conversational in Serbian while exploring the Balkans.
One language or four?
Unfortunately, there's no simple answer to this question, and what you'll hear depends on who you ask. The question is more political than linguistic and often results in heated discussions about what language truly means.
Without turning this post into a history lesson, here are a few things you should know.
How languages unified
In the 19th century, Serbia and Bosnia were occupied by the Ottoman Empire, and Croatia was under the rule of Austro-Hungary. Resistance to the occupation brought to life the idea of Yugoslavism, the belief that South Slavic peoples—Serbs, Croats, Slovenes, Bosniaks, Macedonians—share enough common language and culture to form a single unified nation. It drove the need to standardize the various dialects spoken across the Balkans.
In 1850, Serbian and Croatian linguists met to decide on unified standards for a new language that was supposed to bring the region's nations closer together. Serbo-Croatian was born, later becoming the official language of Yugoslavia—the unified South Slavic state formed in 1918.
How languages separated
In the 1990s, Yugoslavia broke up, and in the tense atmosphere of a political divide, Serbo-Croatian fell apart and became the four separate languages we know today: Bosnian, Croatian, Montenegrin, and Serbian—BCMS for short.
Curious about the politics behind it all? Read more:
What’s the difference between language and dialect?
Balkan people share an incredible sense of humor even in times of political turmoil. Here's a quick glimpse into that absurd reality, courtesy of the satirical sketch show Top lista nadrealista. A guy from Bosnia and Herzegovina is trying to invite a Serbian girl to meet him for coffee. They can't understand each other despite clearly speaking the same language and have to use a translator to communicate. There are no English subtitles, but you can clearly hear that they just repeat each other word for word with slight differences in pronunciation.
This brings us to the main practical point: all four languages are mutually intelligible, meaning speakers of one can generally understand speakers of another without much difficulty. Linguistically, you'd call BCMS a pluricentric language: a language with several standard forms, corresponding to different countries like British/American/Australian English.
Similarities
Good news: learn any of the four languages and you'll understand the whole region.
The grammar and vocabulary are basically the same, with a lot of shared cultural and historical background. The experience of a Bosnian speaking to a Croatian person is very similar to that of an American speaking to an Australian.
To put it in perspective: with just beginner-level Serbian, I had no issues in Montenegro and Bosnia and didn't have to switch to English.
Differences
There are a few key differences though. Understanding them will make your experience navigating the Balkans much easier.
Latin and Cyrillic scripts
Serbia is a unique country that uses two different alphabets at the same time. Serbians are comfortable with both Latin and Cyrillic, while Croatians only use Latin.
So even though a Serbian and a Croatian can effortlessly talk to each other, reading is a different story—a Croatian person won't understand Serbian text written in Cyrillic.
Bosnia and Montenegro are somewhere in the middle: Cyrillic and Latin are both officially recognized, but in practice Latin is used almost exclusively.
Vocabulary
Most BCMS vocabulary is shared across all four languages. Think of the difference between American and British English. Some words are different—Croatian tends to lean more toward old Slavic roots, while Serbian takes a different path. Centuries of Ottoman occupation resulted in a lot of Turkish loanwords in Serbian and Bosnian, while Croatian absorbed more Hungarian and German vocabulary.
The e/ije difference
After spending a couple of years learning Serbian, I went on a short trip to Sarajevo, Bosnia's capital. I ordered a cappuccino in a cozy cafe downtown. "Can I have it with regular milk?" I asked in Serbian:
- Može obično mleko?
The waiter looked puzzled for a moment, and then asked again:
- Ahh, mlijeko?
It's a subtle difference in pronunciation, and I think he understood me perfectly well and was probably just teasing. But this sums up the ekavian/ijekavian difference perfectly. Words that have the e sound in Serbian are pronounced and written with ije in Croatian, Bosnian, and Montenegrin, making them sound softer. A couple more examples: dete/dijete (child), vreme/vrijeme (weather). There's no strict border here though—in some Bosnian regions ekavian is more common, and in some Serbian villages you'll hear a distinct ijekavian pronunciation.
Which one to choose?
You may have already figured out that it's not as high-stakes as it seems at first—you'll be perfectly fine navigating the Balkans with any of them.
If you plan to visit or live in a particular country, or have some family ties there, simply go with that one. If you have no specific country in mind, the choice usually comes down to Serbian or Croatian—and that's what the chart below will help you figure out.
If you're interested in Cyrillic script, learning Serbian can be a great opportunity to add a new alphabet to your skillset. Or if you already speak any Eastern Slavic language, consider yourself lucky: it's going to be an easier ride! If you're drawn to the history and culture of Yugoslavia, Serbian is a strong choice—learning Cyrillic will unlock Yugoslav-era media.
However, Serbian is the odd one out among the four variants. In the Balkan family, Croatian, Bosnian, and Montenegrin are brothers, and Serbian is a cousin. So if you want to visit more countries, travel within the EU, or hit the breathtaking beaches of Croatia and Montenegro, Croatian may be your best bet. And if you're new to Slavic languages, Croatian's exclusive use of the Latin script makes it the lower-barrier entry point.
Whichever you choose, we've got you covered! Glossika has both Serbian and Croatian courses.
Useful Resources
You'll easily find resources for Serbian and Croatian, and will likely struggle more with Bosnian and Montenegrin. But don't worry, Croatian materials will serve you just as well—the languages are close enough.
✨Beginners' Tip: Balkan countries don't dub foreign movies and TV shows. Some cartoons aimed for children are dubbed though, so you'll be able to find many of them online, try searching crtani na srpskom/hrvatskom or sinhronizovani crtani filmovi.
A slightly dated but still great free resource for English-speaking learners is the FSI Serbo-Croatian Basic Course. Published in 1965 when Yugoslavia was still united, most of the grammar and language information remains useful today. You'll get free access to the textbook used by the Foreign Service Institute, along with mp3s for listening exercises.
🇭🇷 Croatian
- Textbooks: Teach Yourself Complete Croatian (Vladislava Ribnikar and David Norris), Colloquial Serbian: The Complete Course for Beginners (Celia Hawkesworth)
- A great movie: Kako je počeo rat na mom otoku—one of the most celebrated Croatian films, reflecting the Yugoslav Wars of the 90s through humor. Based on true events.
- Beginner-friendly series: Bitange i princeze—a beloved Croatian 2000s sitcom about five complete strangers who end up as flatmates and neighbors, featuring everyday speech that's easy to follow.
- Content Creators (language): Croatian with Ivana, Croatian with Mirsad
- Content Creators (immersion): Vid Juracic Otok Priča (Croatian travel and culture with English subtitles), Nikolina Čudić (sketches about Balkan culture and life), KAMBER izam (travel)
🇷🇸 Serbian
- Textbooks: Teach Yourself Complete Serbian (Vladislava Ribnikar and David Norris), Serbian for Foreigners with a Short Grammar (Petar Banjac)
- Great movies: Lepa sela, lepo gore—a celebrated Serbian film following a soldier recovering in hospital, haunted by memories of his childhood friend now fighting on the opposite side of the Bosnian War.
- Beginner-friendly series: Andrija i Anđelka—maybe not the best Serbian series ever produced, but definitely one of the easiest to follow for beginners. A sketch show about a married couple's daily life.
- Content Creators (language): gospeakserbian101, learn_serbian
- Content Creators (for immersion): Mario Vrećo (social commentary), Jovan Memedović Official (travel), Veselin (humor, sketches)
🇧🇦 Bosnian
- Textbooks: Bosnian, Croatian, Serbian, a Textbook: With Exercises and Basic Grammar (Ronelle Alexander) not specifically focused on Bosnian but is useful for differentiating Croatian and Bosnian/Montenegrin
- Great movie: No Man's Land—a film about three soldiers from opposing sides trapped between the front lines during the Bosnian War. Winner of the 2002 Academy Award for Best Foreign Language Film.
- Beginner-friendly series: Lud, zbunjen, normalan—a sitcom depicting a three-generation Sarajevo household: a grandfather, his son, and his grandson navigating everyday life together.
- Content Creators (language): Bosnian with Amina
- Content Creators (for immersion): Raiwolf (sketches)
🇲🇪 Montenegrin
- Textbooks: Go with Croatian and Bosnian books, and you'll pick authentic Montenegrin vocabulary through content
- Great movie: Obraz—a Montenegrin thriller drama set during World War II, following a child on the run who finds refuge in an enemy's home.
- Beginner-friendly series: Budva na pjenu od mora—Serbian-Montenegrin soap opera series about two families from different social circles and conflict between liberal and conservative views.
- Content Creators (language): Montenegrin-specific content is hard to come by—Croatian and Bosnian creators will serve you just as well.
- Content Creators (for immersion): Crnogorski vodic (culture, travel), Bojance (sketches)
Most of the films on this list are about war as it's the most recent trauma for all these Balkan countries. If you want something light, check out the Croatian-Serbian comedy Svadba (Wedding) that was released in 2026 and became an instant hit. For a cultural deep dive don't forget about Yugoslav-era classics like Ko to tamo peva (Who’s Singin’ Over There?), Maratonci trče počasni krug (Marathon Runners Do a Lap of Honour), Balkan Ekspres (Balkan Express), and many others.
Final Words
The political divide between the languages was somewhat overcome in the larger Balkan diaspora that came up with the term naš jezik/naški (our language). The meaning is simple: it doesn't matter what standard you speak—if you can understand each other, it's our language. When living abroad, cultural and linguistic similarity becomes a common ground that unites people once again.
For you, this means that learning any one of the four languages is your ticket into this world too.