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In accordance with the Final Article, the Protocol came into force between Japan and each of the following states on the dates indicated. The Protocol entered into force initially on 28 April 1952.
| PARTICIPANT | Entry into Force of the San Francisco Treaty | Entry into Force of the Protocol |
| Argentina | 28.04.1952 | did not sign |
| Australia | 28.04.1952 | 28.04.1952 |
| Belgium | ... | |
| Bolivia | ||
| Brazil | 20.05.1952 | did not sign |
| Cambodia | 02.06.1952 | 02.06.1952 |
| Canada | 28.04.1952 | 28.04.1952 |
| Ceylon | 28.04.1952 | 28.04.1952 |
| Chile | ||
| Colombia | ||
| Costa Rica | ||
| Cuba | ||
| Dominican Republic | 06.06.1952 | 06.06.1952 |
| Ecuador | ||
| Egypt | ... | |
| El Salvador | 06.05.1952 | did not sign |
| Ethiopia | 12.06.1952 | 12.06.1952 |
| France | 28.04.1952 | 28.04.1952 |
| Greece | ... | |
| Guatemala | ||
| Haiti | ... | |
| Honduras | ... | |
| Indonesia | ... | |
| Iran | ... | |
| Iraq | ... | |
| Japan | 28.04.1952 | 28.04.1952 |
| Laos | 20.06.1952 | 20.06.1952 |
| Lebanon 03.10.1952 | .... | |
| Liberia | ... | |
| Grand Duchy of Luxembourg | ... | |
| Mexico | 28.04.1952 | did not sign |
| Netherlands | 17.06.1952 | 17.06.1952 |
| New Zealand | 28.04.1952 | 28.04.1952 |
| Nicaragua | ||
| Norway | 19.06.1952 | did not sign |
| Pakistan | 28.04.1952 | 28.04.1952 |
| Panama | ||
| Peru | 17.06.1952 | did not sign |
| Philippines | ||
| Saudi Arabia | ... | |
| Union of South Africa | ||
| Syria | ... | |
| Turkey | ... | |
| United Kingdom of Great Britain and Northern Ireland | 28.04.1952 | 28.04.1952 |
| United States of America | 28.04.1952 | did not sign |
| Uruguay | ... | |
| Venezuela | 20.06.1952 | did not sign |
| Viet Nam | 20.06.1952 | 20.06.1952 |
Source: United Nations Treaty Series 1952 (reg. no. 1833)