COSM Combined Otolaryngology Spring Meetings 2027
- Dates
- April 7–11, 2027 Confirmed
- Location
- Sheraton Grand Seattle; Seattle Convention Center (Arch Building), Seattle, United States
- Expected attendance
- About 3,150
- Therapy or topic area
- Otorhinolaryngology
About the meeting
The Combined Otolaryngology Spring Meetings (COSM) is a major national meeting for otolaryngology – head and neck surgery. Its mission is to bring together the membership of the COSM societies, otolaryngology residents in training, medical students, and allied health professionals for the purpose of disseminating and exchanging cutting-edge clinical and basic scientific research. COSM is organized by participating specialty societies (each society runs its own scientific program and abstracts).
Based on the official COSM website.
Key dates for COSM 2027
| Milestone | Date | Status |
|---|---|---|
| Abstract submission opens | July 15, 2026 | Passed |
| Abstract submission deadline | November 2, 2026 | Passed |
| Meeting | April 7–11, 2027 | Confirmed |
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Submitting an abstract to COSM 2027
- Membership required
- No
Abstract submission for COSM 2027 has closed. See the official website for details. The official guidelines always take precedence.
Common questions
When is the COSM 2027 abstract deadline?
The abstract submission deadline was November 2, 2026. The date was confirmed.
When and where is COSM 2027?
COSM 2027 takes place April 7–11, 2027 at Sheraton Grand Seattle; Seattle Convention Center (Arch Building) in Seattle, United States. The dates are confirmed.
How many people attend COSM?
About 3,150 people are expected at COSM 2027.
How can our team cover COSM efficiently?
harmony Insights turns the full COSM program into a searchable catalog within 24 hours of abstract titles being posted, scored against your scientific interests. See how it works.
Past editions
| Year | Meeting dates | City | Abstract deadline |
|---|---|---|---|
| 2026 | April 22–26, 2026 | Phoenix | October 15, 2025 |
| 2025 | May 14–18, 2025 | New Orleans | Not recorded |
| 2024 | May 15–19, 2024 | Chicago | Not recorded |
| 2023 | May 3–7, 2023 | Boston | Not recorded |
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Last updated November 6, 2026. Source: Orbytel Group conference database. Dates marked estimated are our projections, not the organizer's.
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