Where a country is party to the Madrid Agreement, its name is followed by the letter "A"; where a country is party to the Madrid Protocol, its name is followed by the letter "P"; where a country is party to both the Agreement and the Protocol, its name is followed by "A & P".
| AG | Antigua and Barbuda (P) |
| AL | Albania (A & P) |
| AM | Armenia (A & P) |
| AN | Netherlands Antilles (P) |
| AT | Austria (A & P) |
| AU | Australia (P) |
| AZ | Azerbaijan (A & P) |
| BA | Bosnia and Herzegovina (A & P) |
| BE | Belgium (A & P) |
| BG | Bulgaria (A & P) |
| BH | Bahrain (P) |
| BT | Bhutan (A & P) |
| BW | Botswana (P) |
| BX | Benelux Trademark Office* |
| BY | Belarus (A & P) |
| CH | Switzerland (A & P) |
| CN | China (A & P) |
| CU | Cuba (A & P) |
| CY | Cyprus (A & P) |
| CZ | Czech Republic (A & P) |
| DE | Germany (A & P) |
| DK | Denmark (P) |
| DZ | Algeria (A) |
| EE | Estonia (P) |
| EG | Egypt (A & P) |
| EM | European Union (P) |
| ES | Spain (A & P) |
| FI | Finland (P) |
| FR | France (A & P) |
| GB | United Kingdom (P) |
| GE | Georgia (P) |
| GH | Ghana (P) |
| GR | Greece (P) |
| HR | Croatia (A & P) |
| HU | Hungary (A & P) |
| IE | Ireland (P) |
| IR | Iran (Islamic Republic of) (A & P) |
| IS | Iceland (P) |
| IT | Italy (A & P) |
| JP | Japan (P) |
| KE | Kenya (A & P) |
| KG | Kyrgyzstan (A & P) |
| KP | Democratic People's Republic of Korea (A & P) |
| KR | Republic of Korea (P) |
| KZ | Kazakhstan (A) |
| LI | Liechtenstein (A & P) |
| LR | Liberia (A & P) |
| LS | Lesotho (A & P) |
| LT | Lithuania (P) |
| LU | Luxembourg (A & P) |
| LV | Latvia (A & P) |
| MA | Morocco (A & P) |
| MC | Monaco (A & P) |
| MD | Republic of Moldova (A & P) |
| ME | Montenegro (A & P) |
| MG | Madagascar (P) |
| MK | The former Yugoslav Republic of Macedonia (A & P) |
| MN | Mongolia (A & P) |
| MZ | Mozambique (A & P) |
| NA | Namibia (A & P) |
| NL | Netherlands (A & P) |
| NO | Norway (P) |
| OM | Oman (P) |
| PL | Poland (A & P) |
| PT | Portugal (A & P) |
| RO | Romania (A & P) |
| RS | Serbia (A & P)1 |
| RU | Russian Federation (A & P) |
| SD | Sudan (A & P) |
| SE | Sweden (P) |
| SG | Singapore (P) |
| SI | Slovenia (A & P) |
| SK | Slovakia (A & P) |
| SL | Sierra Leone (A & P) |
| SM | San Marino (A & P) |
| ST | Sao Tome and Principe (P) |
| SY | Syrian Arab Republic (A & P) |
| SZ | Swaziland (A & P) |
| TJ | Tajikistan (A) |
| TM | Turkmenistan (P) |
| TR | Turkey (P) |
| UA | Ukraine (A & P) |
| US | United States of America (P) |
| UZ | Uzbekistan (P) |
| VN | Viet Nam (A & P) |
| ZM | Zambia (P) |
* For the application of the Madrid Agreement and the Madrid Protocol, Belgium, Luxembourg and the Netherlands are deemed to be a single country; the common Office for these countries is the Benelux Trademark Office (code BX).
1 Serbia is the continuation of the legal personality of Serbia and Montenegro, which ceased to exist on 3 June 2006.