There are 26 Consultative Parties to the Antarctic Treaty. 12 are original signatories.

Original Signatories         Date of ratification   
United Kingdom	                31 May 1960
South Africa	                21 Jun 1960
Belgium	                        26 Jul 1960
Japan	                         4 Aug 1960
United States of America        18 Aug 1960
Norway	                        24 Aug 1960
France	                        16 Sep 1960
New Zealand	                 1 Nov 1960
Russia (1)	                 2 Nov 1960
Argentina	                23 Jun 1961
Australia 	                23 Jun 1961 
Chile	                        23 Jun 1961

Acceding States              Date of accession     Consultative status 
Poland 	                         8 Jun 1961          29 Jul 1977
Netherlands	                30 Mar 1967          19 Nov 1990
German Democratic Republic (2)  19 Nov 1974           5 Oct 1987
Brazil  	                16 May 1975	     12 Sep 1983
Germany, Federal Republic        5 Feb 1979	      3 Mar 1981
Uruguay	                        11 Jan 1980	      7 Oct 1985
Italy	                        18 Mar 1981	      5 Oct 1987
Peru	                        10 Apr 1981	      9 Oct 1989
Spain	                        31 Mar 1982	     21 Sep 1988
China, People's Republic         8 Jun 1983	      7 Oct 1985
India	                        19 Aug 1983	     12 Sep 1983
Sweden	                        24 Apr 1984	     21 Sep 1988
Finland	                        15 May 1984	      9 Oct 1989
Republic of Korea	        28 Nov 1986	      9 Oct 1989
Ecuador                         15 Sep 1987	     19 Nov 1990


Notes
1. Formerly the Soviet Union, represented by Russia from December 1991.

2. United with the Federal Republic of Germany on 3 October 1990.