A List of all Country Codes
Wikipedia for a more current list, or IANA (Internet assigned numbers authority) for top level domain names.
AC Ascension Island
AD Andorra
AE United Arab Emirates
AF Afghanistan
AG Antigua and Barbuda
AI Anguilla
AL Albania
AM Armenia
AN Netherlands Antilles
AO Angola
AP African Regional Industrial Property Organization
AQ Antarctica
AR Argentina
AS American Samoa
AT Austria
AU Australia
AW Aruba
AX Åland Islands
AZ Azerbaijan
BA Bosnia and Herzegovina
BB Barbados
BD Bangladesh
BE Belgium
BF Burkina Faso
BG Bulgaria
BH Bahrain
BI Burundi
BJ Benin
BL Saint Barthélemy
BM Bermuda
BN Brunei Darussalam
BO Bolivia
BQ Bonaire, Sint Eustatius and Saba
BR Brazil
BS Bahamas
BT Bhutan
BU Burma
BV Bouvet Island
BW Botswana
BY Belarus
BZ Belize
CA Canada
CC Cocos (Keeling) Islands
CD Congo, the Democratic Republic of the (Formerly Zaire)
CF Central African Republic
CG Congo
CH Switzerland
CI Cote D'Ivoire (Ivory Coast)
CK Cook Islands
CL Chile
CM Cameroon
CN China
CO Colombia
CP Clipperton Island
CR Costa Rica
CS Czechoslovakia (former)
CS (Serbia and Montenegro)
CU Cuba
CV Cape Verde
CW Curaçao
CX Christmas Island
CY Cyprus
CZ Czech Republic
DE Germany
DG Diego Garcia
DJ Djibouti
DK Denmark
DM Dominica
DO Dominican Republic
DY Benin
DZ Algeria
EA Ceuta, Melilla
EC Ecuador
EE Estonia
EG Egypt
EH Western Sahara
ER Eritrea
ES Spain
ET Ethiopia
EU European Union
EW Estonia
FI Finland
FJ Fiji
FK Falkland Islands (Malvinas)
FL Liechtenstein
FM Micronesia
FO Faroe Islands
FR France
FX France, Metropolitan
GA Gabon
GB Great Britain (UK)
GD Grenada
GE Georgia
GF French Guiana
GG Guernsey
GH Ghana
GI Gibraltar
GL Greenland
GM Gambia
GN Guinea
GP Guadeloupe
GQ Equatorial Guinea
GR Greece
GS S. Georgia and S. Sandwich Isls.
GT Guatemala
GU Guam
GW Guinea-Bissau
GY Guyana
HK Hong Kong
HM Heard and McDonald Islands
HN Honduras
HR Croatia (Hrvatska)
HT Haiti
HU Hungary
IC Canary Islands
ID Indonesia
IE Ireland
IL Israel
IM Isle of Man
IN India
IO British Indian Ocean Territory
IQ Iraq
IR Iran
IS Iceland
IT Italy
JA Jamaica
JE Jersey
JM Jamaica
JO Jordan
JP Japan
KE Kenya
KG Kyrgyzstan
KH Cambodia
KI Kiribati
KM Comoros
KN Saint Kitts and Nevis
KP Korea (North)
KR Korea (South)
KW Kuwait
KY Cayman Islands
KZ Kazakhstan
LA Laos
LB Lebanon
LC Saint Lucia
LI Liechtenstein
LK Sri Lanka
LR Liberia
LS Lesotho
LT Lithuania
LU Luxembourg
LV Latvia
LY Libya
MA Morocco
MC Monaco
MD Moldova
ME Montenegro
MF Saint Martin (French part)
MG Madagascar
MH Marshall Islands
MK Macedonia
ML Mali
MM Myanmar
MN Mongolia
MO Macau
MP Northern Mariana Islands
MQ Martinique
MR Mauritania
MS Montserrat
MT Malta
MU Mauritius
MV Maldives
MW Malawi
MX Mexico
MY Malaysia
MZ Mozambique
NA Namibia
NC New Caledonia
NE Niger
NF Norfolk Island
NG Nigeria
NI Nicaragua
NL Netherlands
NO Norway
NP Nepal
NR Nauru
NT Neutral Zone
NU Niue
NZ New Zealand (Aotearoa)
OM Oman
PA Panama
PE Peru
PF French Polynesia
PG Papua New Guinea
PH Philippines
PK Pakistan
PL Poland
PM St. Pierre and Miquelon
PN Pitcairn
PR Puerto Rico
PS Palestinian Territory, Occupied
PT Portugal
PW Palau
PY Paraguay
QA Qatar
RE Reunion
RO Romania
RS Serbia
RU Russian Federation
RW Rwanda
SA Saudi Arabia
Sb Solomon Islands
SC Seychelles
SD Sudan
SE Sweden
SF Finland
SG Singapore
SH St. Helena
SI Slovenia
SJ Svalbard and Jan Mayen Islands
SK Slovak Republic
SL Sierra Leone
SM San Marino
SN Senegal
SO Somalia
SR Suriname
SS South Sudan
ST Sao Tome and Principe
SU USSR (former)
SV El Salvador
SX Sint Maarten (Dutch part)
SY Syria
SZ Swaziland
TA Tristan da Cunha
TC Turks and Caicos Islands
TD Chad
TF French Southern Territories
TG Togo
TH Thailand
TJ Tajikistan
TK Tokelau
TL Timor-Leste
TM Turkmenistan
TN Tunisia
TO Tonga
TP East Timor (now Timor-Leste)
TR Turkey
TT Trinidad and Tobago
TV Tuvalu
TW Taiwan
TZ Tanzania
UA Ukraine
UG Uganda
UK United Kingdom
UM US Minor Outlying Islands
US United States
UY Uruguay
UZ Uzbekistan
VA Vatican City State (Holy See)
VC Saint Vincent and the Grenadines
VE Venezuela
VG Virgin Islands (British)
VI Virgin Islands (U.S.)
VN Viet Nam
VU Vanuatu
WF Wallis and Futuna Islands
WS Samoa
YE Yemen
YT Mayotte
YU Yugoslavia
ZA South Africa
ZM Zambia
ZR Zaire
ZW Zimbabwe
COM US Commercial
EDU US Educational
GOV US Government
INT International
MIL US Military
NET Network
ORG Non-Profit Organization
ARPA Old style Arpanet
NATO Nato field