1. Germany: With a population of around 83 million, Germany is the largest German-speaking country.
2. Austria: Austria has a population of around 9 million.
3. Switzerland: Switzerland has a population of around 8.7 million.
4. Belgium: While Dutch is the main language in Belgium, about 40% of the population speaks German, making it the fourth largest German-speaking country in terms of population.
5. Liechtenstein: Liechtenstein has a population of around 38,000.
It's important to note that this list ranks the countries by the size of their German-speaking populations. There are other countries with significant German-speaking populations, such as:
* Luxembourg: German is one of the official languages here, along with French and Luxembourgish.
* Italy: The region of South Tyrol in northern Italy is predominantly German-speaking.
* Czech Republic: There are significant German-speaking communities in the Czech Republic, particularly in the border regions.
If you're looking for the largest German-speaking regions by area, then the ranking would be different. For example, Germany is significantly larger in terms of landmass than Switzerland or Austria.