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See. Hear. Detect: CTBTO Science in Action at Long Night of Research

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US nears IMS completion with Antarctic infrasound station

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CTBTO and Côte d’Ivoire Sign Facility Agreement for IMS Stations in Dimbokro

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Statement by Robert Floyd, Executive Secretary of the CTBTO

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Verification today, tomorrow, together: Highlights from SnT2025

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Our Mission

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Ending Nuclear Tests

The Treaty

The Organization

Integrated Field Exercise (IFE26)

30 years of the CTBT

Our Work

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News and Events

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CTBT marks 30 years as States gather at NPT Review Conference

Namibia to host CTBTO’s Integrated Field Exercise in 2026

Highlights of 2025 voluntary contributions

CTBTO scenario-based training strengthens national expertise in radionuclide analysis

Peru becomes 22nd country to sign CTBTO tsunami warning agreement

Schedule of sessions

Working Group B

Sixty-Seventh Session Of Working Group B

24 Aug 2026 -04 Sep 2026

Advisory Group

Sixty-Seventh Session Of The Advisory Group

08 Sep 2026 -11 Sep 2026

Working Group A

Seventieth Session Of Working Group A

19 Oct 2026 -21 Oct 2026

Training and Workshops

Technical Training For Station Managers Of…

02 Nov -06 Nov 2026

International Atmospheric Transport…

17 Nov -19 Nov 2026

Training Course On Ndc Capacity Building For…

28 Oct -30 Oct 2026

Tweets by @CTBTO

Resources

Member States

Researchers & Experts

Civil Society

Media

Information Materials

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CTBTO Fact Sheet

International Monitoring System (IMS) Map

Verification Regime Brochure

Civil and Scientific Applications Brochure

On-Site Inspection Brochure

Work With Us

Join CTBTO on our mission to create a world free of nuclear testing. Learn more about employment and business opportunities with the Provisional Technical Secretariat.

Employment Procurement