Wide 2688

Membership Information for: Antarctic Treaty

Signed: 1959-12-01; Entered into force: 1961-06-23; Terminated:
Source for membership data: https://www.state.gov/antarctic-treaty/
Date of last download from source: 2023-05-17
This is the IEADB's most current data on signature, ratification, entry into force, and other membership actions. The IEADB updates this data approximately once a year and tries to ensure it is current and accurate. For the most current data, visit the Antarctic Treaty Secretariat website. For inaccuracies, please notify the Project Director.
Country195919601961196219631964196519661967196819691970197119721973197419751976197719781979198019811982198319841985198619871988198919901991199219931994199519961997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024
Ratifiers090000000000000000000000000000000000000000000000000000000000000000
Members (agreement in force)0013141414151517171717181818181919192021222526283232343839404142424444444545454646474747474748484949515253535356565656575757585959
Argentina002222222222222222222222222222222222222222222222222222222222222222
Aruba000000000000000000000000000222222222222222222222222222222222222222
Australia002222222222222222222222222222222222222222222222222222222222222222
Austria000000000000000000000000000022222222222222222222222222222222222222
Belarus000000000000000000000000000000000000000000000002222222222222222222
Belgium012222222222222222222222222222222222222222222222222222222222222222
Brazil000000000000000022222222222222222222222222222222222222222222222222
Bulgaria000000000000000000022222222222222222222222222222222222222222222222
Canada000000000000000000000000000002222222222222222222222222222222222222
Chile002222222222222222222222222222222222222222222222222222222222222222
China000000000000000000000000222222222222222222222222222222222222222222
Colombia000000000000000000000000000000222222222222222222222222222222222222
Costa Rica000000000000000000000000000000000000000000000000000000000000000222
Cuba000000000000000000000000022222222222222222222222222222222222222222
Curacao000000000000000000000000000000000000000000000000000222222222222222
Czechia000222222222222222222222222222222022222222222222222222222222222222
Denmark000000222222222222222222222222222222222222222222222222222222222222
Ecuador000000000000000000000000000022222222222222222222222222222222222222
Estonia000000000000000000000000000000000000000000222222222222222222222222
Finland000000000000000000000000022222222222222222222222222222222222222222
France012222222222222222222222222222222222222222222222222222222222222222
Germany000000000000000000002222222222222222222222222222222222222222222222
Greece000000000000000000000000000022222222222222222222222222222222222222
Guatemala000000000000000000000000000000002222222222222222222222222222222222
Hungary000000000000000000000000022222222222222222222222222222222222222222
Iceland000000000000000000000000000000000000000000000000000000002222222222
India000000000000000000000000222222222222222222222222222222222222222222
Italy000000000000000000000022222222222222222222222222222222222222222222
Japan012222222222222222222222222222222222222222222222222222222222222222
Kazakhstan000000000000000000000000000000000000000000000000000000002222222222
Korea, Democratic People's Republic000000000000000000000000000022222222222222222222222222222222222222
Korea, Republic of000000000000000000000000000222222222222222222222222222222222222222
Malaysia000000000000000000000000000000000000000000000000000022222222222222
Monaco000000000000000000000000000000000000000000000000022222222222222222
Mongolia000000000000000000000000000000000000000000000000000000002222222222
Netherlands000000002222222222222222222222222222222222222222222222222222222222
New Zealand012222222222222222222222222222222222222222222222222222222222222222
Norway012222222222222222222222222222222222222222222222222222222222222222
Pakistan000000000000000000000000000000000000000000000000000002222222222222
Papua New Guinea000000000000000000000022222222222222222222222222222222222222222222
Peru000000000000000000000022222222222222222222222222222222222222222222
Poland002222222222222222222222222222222222222222222222222222222222222222
Portugal000000000000000000000000000000000000000000000000000222222222222222
Romania000000000000222222222222222222222222222222222222222222222222222222
Russian Federation012222222222222222222222222222222222222222222222222222222222222222
Saint Martin000000002222222222222222222222222222222222222222222222222222222222
San Marino000000000000000000000000000000000000000000000000000000000000000022
Slovakia000000000000000000000000000000000022222222222222222222222222222222
Slovenia000000000000000000000000000000000000000000000000000000000000222222
South Africa012222222222222222222222222222222222222222222222222222222222222222
Spain000000000000000000000002222222222222222222222222222222222222222222
Sweden000000000000000000000000022222222222222222222222222222222222222222
Switzerland000000000000000000000000000000022222222222222222222222222222222222
Türkiye000000000000000000000000000000000000022222222222222222222222222222
Ukraine000000000000000000000000000000000222222222222222222222222222222222
United Kingdom012222222222222222222222222222222222222222222222222222222222222222
United States012222222222222222222222222222222222222222222222222222222222222222
Uruguay000000000000000000000222222222222222222222222222222222222222222222
Venezuela000000000000000000000000000000000000000022222222222222222222222222
Members (agreement in force)0013141414151517171717181818181919192021222526283232343839404142424444444545454646474747474748484949515253535356565656575757585959
Ratifiers090000000000000000000000000000000000000000000000000000000000000000

Membership status is coded as follows:

  • Countries listed are those that have signed and/or ratified the IEA in question.
  • Legend:
    • 0 (pink): Signer: country signed but did not ratify IEA. Status is 0 for all countries until IEA enters into force.
    • 1 (yellow): Ratifier: country signed and ratified IEA but IEA had not entered into force. Status is 1 for countries that have ratified until IEA enters into force.
    • 2 (green):Member: country signed and ratified IEA and IEA has entered into force for that country.
    • Ratifier row is count of states that have ratified.
    • Membership row is count (not sum) of members.
  • If membership data source lacks entry into force date, membership is inferred from year of ratification, if that year occurs after entry into force year of IEA.
  • Status can return to 0 if an IEA is terminated or if a country withdraws. In rare cases, countries later re-join IEAs, with their status returning to 2.
  • Action tab: membership by Action, Country, Year, Month, Day.
  • Wide tab: Annual status data (countries as rows, years as columns).
  • Long tab: Annual status data in Stata format (Country, Year, Membership Status).