We help the world breathe.

The American Thoracic Society improves global health by advancing research, patient care, and public health in pulmonary disease, critical illness, and sleep disorders.

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Leading Scientific Discovery

In today’s uncertain funding environment, your donation to the ATS is more critical than ever. Mission Critical. The progress we have made in understanding, preventing, and treating lung disease depends on consistent investment in research—and right now, that stability is at risk. Since 2004, the ATS has invested over $26M to support 443 research grants. In 2025, the ATS funded 16 grants totaling over $1.2M, a 46% funding increase from 2024.

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Early Career Programs

Applications are open for the ATS Student Scholars Program. Fellows Track Symposium, Resident Boot Camp, and New Faculty Boot Camp during ATS 2026 in Orlando. 

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Join an Assembly or Section

Learn about our 14 Assemblies and 3 Sections and get involved.

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Our Commitment to Diversity, Equity & Inclusion

The ATS promotes diversity, equity, inclusion, accessibility, and belonging for everyone.

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ATS Codes of Conduct

Learn about our Codes of Conduct and how to report concerns.

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Get Involved in Committees

Sign Up for ATS & Assembly Committees

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Join MECOR (International)

ATS provides Methods in Epidemiological, Clinical and Operations Research (MECOR) in Africa, China, India, Southeast Asia, Latin America, and Turkiye.

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ATS Ed+

Enrich your clinical knowledge and competence, learn from the experts at your own pace, and find relevant opportunities to earn CME/MOC.

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When you become a member of our global American Thoracic Society community of 30,000+ health care providers and researchers, you’ll have access to:

+ Cutting-edge science through ATS journals and publications.

+ Discounts on the Annual ATS International Conference, CME, and ATS Ed+ products.

+ A robust, collaborative online medical community of peers in our ATS DocMatter Community.

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Every gift matters in the fight against respiratory disease, and helps the next generation. The ATS is committed to your professional growth and the advancement of thoracic medicine. Lend a hand, and together, we can create a world where every breath is a testament to progress in research, pulmonary, critical care, and sleep medicine.
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