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CTBTO detects two earthquakes in northern Iran on 5 October

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Friends of CTBT gather for 11th biennial meeting

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A brush with peace: CTBTO Youth Group art exhibit opens in Vienna and New York

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Seismic shift: CTBTO's data key to rapid tsunami alerts, advancing SDG goals

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Diving deep: CTBTO data helps discover new pygmy blue whale population

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Our Mission

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Ending Nuclear Tests

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Lessons learned to action: OSI Workshop-26 gears up for Integrated Field Exercise

Art, peace and sustainability: mural unveiled at Vienna International Centre

Build-Up Exercise 2024: OSI capabilities tested in new terrain

Papua New Guinea ratifies CTBT, advancing Treaty universalisation in Pacific

Venezuela becomes 20th State to sign tsunami warning agreement with CTBTO

Schedule of sessions

Preparatory Commission

Sixty-Third Session Of The Preparatory…

11 Nov 2024 -13 Nov 2024

Training and Workshops

Hydroacoustic Training Course For National…

19 Aug -20 Dec 2024

Stm24: Specialized Technical Meeting On…

19 Nov -21 Nov 2024 09:00 am -05:00 pm

Infrasound Technology Workshop 2024 (Itw2024)

04 Nov -08 Nov 2024

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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.

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