These are the three-letter country codes dreamed up by the International Olympic Committee and also used widely by other international sporting bodies and events, not least for captions on your TV screens. Why they don't use the ISO ones, who knows, but here they are in case you need them. Note that the versions of country names used by the IOC reflect an attempt to juggle a variety of geopolitical issues without offending people, hence the appearance of the FYROM, Chinese Taipei and Great Britain rather than Macedonia, Taiwan and the United Kingdom:
AFG Afghanistan
AHO Netherlands Antilles
ALB Albania
ALG Algeria
AND Andorra
ANG Angola
ANT Antigua and Barbuda
ARG Argentina
ARM Armenia
ARU Aruba
ASA American Samoa
AUS Australia
AUT Austria
AZE Azerbaijan
BAH Bahamas
BAN Bangladesh
BAR Barbados
BDI Burundi
BEL Belgium
BEN Benin
BER Bermuda
BHU Bhutan
BIH Bosnia and Herzegovina
BIZ Belize
BLR Belarus
BOL Bolivia
BOT Botswana
BRA Brazil
BRN Bahrain
BRU Brunei Darussalam
BUL Bulgaria
BUR Burkina Faso
CAF Central African Republic
CAM Cambodia
CAN Canada
CAY Cayman Islands
CGO Congo
CHA Chad
CHI Chile
CHN People's Republic of China
CIV Côte d'Ivoire
CMR Cameroon
COD Democratic Republic of the Congo
COK Cook Islands
COL Colombia
COM Comoros
CPV Capo Verde
CRC Costa Rica
CRO Croatia
CUB Cuba
CYP Cyprus
CZE Czech Republic
DEN Denmark
DJI Djibouti
DMA Dominica
DOM Dominican Republic
ECU Ecuador
EGY Egypt
ERI Eritrea
ESA El Salvador
ESP Spain
EST Estonia
ETH Ethiopia
FIJ Fiji
FIN Finland
FRA France
FSM Federated States of Micronesia
GAB Gabon
GAM Gambia
GBR Great Britain
GBS Guinea-Bissau
GEO Georgia
GEQ Equatorial Guinea
GER Germany
GHA Ghana
GRE Greece
GRN Grenada
GUA Guatemala
GUI Guinea
GUM Guam
GUY Guyana
HAI Haiti
HKG Hong Kong, China
HON Honduras
HUN Hungary
INA Indonesia
IND India
IRI Islamic Republic of Iran
IRL Ireland
IRQ Iraq
ISL Iceland
ISR Israel
ISV Virgin Islands
ITA Italy
IVB British Virgin Islands
JAM Jamaica
JOR Jordan
JPN Japan
KAZ Kazakhstan
KEN Kenya
KGZ Kyrgyzstan
KOR Korea
KSA Saudi Arabia
KUW Kuwait
LAO Laos People's Democratic Republic
LAT Latvia
LBA Libyan Arab Jamahiriya
LBR Liberia
LCA Saint Lucia
LES Lesotho
LIB Lebanon
LIE Liechtenstein
LTU Lithuania
LUX Luxembourg
MAD Madagascar
MAR Morocco
MAS Malaysia
MAW Malawi
MDA Republic of Moldova
MDV Maldives
MEX Mexico
MGL Mongolia
MKD Former Yugoslav Republic of Macedonia
MLI Mali
MLT Malta
MON Monaco
MOZ Mozambique
MRI Mauritius
MTN Mauritania
MYA Myanmar
NAM Namibia
NCA Nicaragua
NED Netherlands
NEP Nepal
NGR Nigeria
NIG Niger
NOR Norway
NRU Nauru
NZL New Zealand
OMA Oman
PAK Pakistan
PAN Panama
PAR Paraguay
PER Peru
PHI Philippines
PLE Palestine
PLW Palau
PNG Papua New Guinea
POL Poland
POR Portugal
PRK Democratic People's Republic of Korea
PUR Puerto Rico
QAT Qatar
ROM Romania
RSA South Africa
RUS Russia
RWA Rwanda
SAM Samoa
SEN Senegal
SEY Seychelles
SIN Singapore
SKN Saint Kitts and Nevis
SLE Sierra Leone
SLO Slovenia
SMR San Marino
SOL Solomon Islands
SOM Somalia
SRI Sri Lanka
STP São Tome and Principe
SUD Sudan
SUI Switzerland
SUR Surinam
SVK Slovakia
SWE Sweden
SWZ Swaziland
SYR Syrian Arab Republic
TAN United Republic of Tanzania
TGA Tonga
THA Thailand
TJK Tadjikstan
TKM Turkmenistan
TOG Togo
TPE Chinese Taipei
TRI Trinidad and Tobago
TUN Tunisia
TUR Turkey
UAE United Arab Emirates
UGA Uganda
UKR Ukraine
URU Uruguay
USA United States of America
UZB Uzbekistan
VAN Vanuatu
VEN Venezuela
VIE Vietnam
VIN Saint Vincent and the Grenadines
YEM Yemen
YUG Yugoslavia
ZAM Zambia
ZIM Zimbabwe
Created from a database dump from a website I run. | 
