United Kingdom 3 Letter Abbreviation: GBR or UNK Depending on Context | International Country Codes Continue To Use Multiple Three Letter Abbreviations For Same Country Across Different Contexts
The UK’s Three-Letter Designation: GBR in Olympics, Sport, and International Standards — and the Interesting Question of What the Three Letters Actually Represent | GBR Represents Great Britain and Northern Ireland; But ‘Great Britain’ Is the Island Not the State; The Three Letters Do Invisible Constitutional Work Every Time They Appear on an Olympic Uniform
