| Entry into force: | 9 December 1948, in accordance with article V1. |
| Registration: | 9 December 1948, No. 318. |
| Status: | Signatories: 8 ,Parties: 19. |
| Text: | United Nations, Treaty Series, vol. 20, p. 229. |
Note: The Protocol was approved by the General Assembly of the United Nations in resolution 255 (III)2 of 18 November 1948.
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| Participant | Signature | Definitive signature (s), Acceptance (A) |
| Australia | 9 Dec 1948 s | |
| Austria | 10 Nov 1949 A | |
| Canada | 9 Dec 1948 s | |
| Denmark | 9 Dec 1948 | 27 Sep 1949 A |
| Egypt | 9 Dec 1948 s | |
| Finland | 17 Aug 1949 A | |
| France | 9 Dec 1948 | 11 Jan 1949 A |
| Greece | 9 Dec 1948 | 9 Oct 1950 A |
| India | 9 Dec 1948 | 14 Mar 1949 A |
| Ireland | 28 Feb 1952 A | |
| Italy | 20 May 1949 s | |
| Japan | 2 Dec 1952 A | |
| Myanmar | 9 Dec 1948 | |
| Netherlands | 9 Dec 1948 | 13 Apr 1950 A |
| Norway | 9 Dec 1948 | 22 Mar 1949 A |
| Pakistan | 3 Mar 1952 s | |
| South Africa | 10 Dec 1948 s | |
| Sweden | 9 Dec 1948 s | |
| Switzerland | 9 Dec 1948 | 23 Jan 1970 A |
| United Kingdom of Great Britain and Northern Ireland | 9 Dec 1948 s |
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1. The amendments set forth in the annex to the Protocol entered into force on 9 October 1950, in accordance with article V of the Protocol.
2. Official Records of the General Assembly, Third Session, Part I, A-810, p. 160.