ACS Fall 2026 will be taking place in Chicago. Chicago is known for history, food, and architecture. The famous Route 66 begins in front of the Art Institute of Chicago, the first self-sustaining nuclear chain reaction took place in 1942 at the University of Chicago, and what is formerly known as the Sears Tower was the tallest building in the world from the early 1970s to 1998. This year, the American Chemical Society will continue celebrating its own historic milestone of its 150th anniversary year.
Attendees can be part of the action either in person in Chicago or online with special digital programming. The program will feature keynote speakers, social events and spaces for networking, and tailored career, industry, and student and postdoctoral researcher events. This year’s events will also include special 150th-year programming featuring influential chemists and ACS presidents.
Program by the numbers
ACS Fall 2026 will present original programming hosted (or co-hosted) by 31 ACS divisions and 10 ACS committees, including the president (PRES).
- 10,370 accepted papers, including 5,255 in-person oral presentations and 956 digital oral presentations.
- 4,206 poster presentations, including 961 Sci-Mix presentations.
- 870 half-day sessions, including 677 oral sessions (587 in-person, 90 digital), 169 in-person poster sessions, and 24 in-person Sci-Mix sessions. The most concurrent technical sessions, 88.
- In-person technical sessions are scheduled Monday, Aug. 24, through Thursday, Aug. 27. Digital Meeting programming will be offered on Sunday, Aug. 23.
Alert: The attendee list for ACS Fall 2026 is maintained solely by ACS and is proprietary to ACS. Distribution or other use of the list without express authorization by ACS is strictly prohibited. ACS does not share or sell contact information, in accordance with our privacy policy.
