Christian Orthodox countries are countries where the majority of the population belongs to the Eastern Orthodox Church, which is one of the oldest Christian denominations in the world. The Eastern Orthodox Church is characterized by its liturgical tradition and its adherence to the Nicene Creed.
Examples of Christian Orthodox countries include:
- Serbia
- Greece
- Cyprus
- Russia
- Bulgaria
- Romania
- Montenegro
- North Macedonia
- Albania
- Ukraine
- Belarus
- Moldova
- Georgia
- Armenia
Note that while these countries may have a majority of their population belonging to the Eastern Orthodox Church, they may also have minority populations of other Christian denominations, as well as people of other religions.