Why the same country can have different codes
Because ISO, the IOC, and FIFA are separate organizations that developed their coding systems independently and for different purposes, a country's code can differ slightly between systems β this is why understanding the differences is useful when reading international data or sports coverage.
Frequently Asked Questions
Why does the IOC code for a country sometimes differ from its ISO code?
The IOC established many of its codes earlier and has kept some legacy codes even after ISO standards changed, or uses codes that reflect the country's name in a different context, leading to occasional mismatches.
Which code system should I use for a website or database?
ISO 3166 is the most widely adopted standard for general-purpose use, including web domains, shipping addresses, and software development.