| AFRF |
Association Française de Rugby Féminin |
| ARL |
Australian Rugby League |
| ARU |
Australian Rugby Union |
| EARFU |
East African Rugby Football Union |
| FFR |
Fédération Française de Rugby |
| FIR |
Federazione Italiana Rugby |
| FIRA |
Fédération Internationale de Rugby Amateur |
| GAA |
Gaelic Athletic Association |
| IB |
International Rugby Football Board |
| IFA |
Intercollegiate Football Association |
| IFA |
Irish Football Association |
| IFU |
Irish Football Union |
| IGRAB |
International Gay Rugby Association Board |
| IRFU |
Irish Rugby Football Union |
| JRFU |
Japanese Rugby Football Union |
| LFRT |
Ligue Française de Rugby à Treize |
| NFUI |
Northern Football Union of Ireland |
| NIFC |
North of Ireland Football Club |
| NRL |
National Rugby League |
| NSWRFL |
New South Wales Rugby Football League |
| NZRFU |
New Zealand Rugby Football Union |
| PIRA |
Pacific Islands Rugby Alliance |
| RFU |
Rugby Football Union |
| SANZAR |
South African, New Zealand and Australian Rugby |
| SARB |
South African Rugby Board |
| SARFU |
South African Rugby Football Union |
| SRU |
Scottish Rugby Union (formerly SFU – Scottish Football Union) |
| UFRA |
Union Française de Rugby Amateur |
| USFSA |
Union des Sociétés Françaises de Sports Athlétiques |
| WPCRFU |
Western Province Coloured Rugby Football League |
| WRC |
World Rugby Corporation |
| WRFU |
Women’s Rugby Football Union |
| WRU |
Welsh Rugby Union |
| YRF |
Yugoslav Rugby Federation |