Environment
The 48th Antarctic Treaty Consultative Meeting (ATCM48)
April 7, 2026
1. ATCM: Antarctic Treaty Consultative Meeting
- Parties that are conducting substantial scientific research activities in Antarctica are called Consultative Parties (29 Parties).
At the Antarctic Treaty Consultative Meeting (ATCM), discussions take place on the peaceful use of Antarctica, promotion of scientific research, and the protection of Antarctic environment. - The ATCM 48 is being held in the City of Hiroshima for the first time in 32 years in Japan.
- Date:
- May 11 (Mon) - 21 (Thu), 2026
- Venue:
- Hiroshima International Conference Center
- Main Agendas:
- tourism activities in Antarctica, impact of climate change on the Antarctic region
- Website:
- ATCM48 Secretariat

2. Antarctic Treaty
The Treaty was adopted by 12 countries including Japan in 1959, entering into force in 1961 (Japan is one of the original signatories). As of December 2025, the number of Parties is 58.

3. Related events (Note) All events are conducted in Japanese language only.
- The latest information can be found on the following website.
4. Media and press releases
(1) Press Releases and Press Briefings
- April 23, 2024: Press release- Japan to host the 48th Antarctic Treaty Consultative Meeting (ATCM48)
(2) For Media
5. Social media outreach
- March 22: International Seal Day; 50 days until the opening of ATCM48 (March 23, 2026): Ministry of Foreign Affairs official X (Japanese
/ English
), Facebook (Japanese
/ English
), Instagram (Japanese
/ English
) - "Taro and Jiro Day" (January 14, 2026): Ministry of Foreign Affairs official X (Japanese
/ English
), Facebook (Japanese
/ English
), Instagram (Japanese
/ English
) - "Antarctic Treaty and the 48th Antarctic Treaty Conference of the Consultative Countries" (December 19, 2025): Ministry of Foreign Affairs official X (Japanese
/ English
), Facebook (Japanese
/ English
), Instagram (Japanese
/ English
) - "Video of a message on the Antarctic Treaty by the diplomatic corps in Argentina" (December 2, 2025): Ministry of Foreign Affairs official X (Japanese
/ English
), Facebook (Japanese
/ English
), Instagram (Japanese
/ English
) - "Antarctic Treaty Day" (December 1, 2025): Ministry of Foreign Affairs official X (Japanese
/ English
), Facebook (Japanese
/ English
), Instagram (Japanese
/ English
)





