2025 SkeptiCal Conference Exhibitors
California Freethought Day
California Freethought Day celebrates science, free speech, social justice, and more... every year! Join us at the State Capitol Building, at the west steps October 6, 2024!
Learn More at: Website
Center for Inquiry Investigations Group
Originally called the Independent Investigations Group (IIG), the Center for Inquiry Investigations Group was founded in 2000 as the brainchild of Center for Inquiry West Executive Director James Underdown. Underdown’s goal is to “spread a plague of skepticism across the world” by pooling the talents of inquiring minds to investigate wild claims and test those who made them. The CFIIG headquarters are located at the CFI West in Los Angeles.
Learn More At: Website
Humanist Association of Monterey Bay Area
Learn More At: Facebook | Meetup
Humanist Community in Silicon Valley
The Humanist Community in Silicon Valley is a Chapter of the American Humanist Association. Established in 1962, we have a long tradition of promoting humanist values while providing interesting educational programs and fun, friendly social events for our members.
Our group is open to all, independent of race, gender, age, color, national origin, ethnic background, socioeconomic status, marital status, disability, sexual orientation or gender identity.
Learn More At: Website | Facebook | Meetup
Monterey County Skeptics
MCS in beautiful Monterey County, California, formed in 2007 as a social group of like-minded people. We also hold the first skeptic conference every year, SkeptiCamp, held in January since 2015.
Learn More At: Website
Rational Roundtable
We are advocates for critical thinking, science-based skepticism, and combating disinformation.
We meet in person bi-monthly to share resources and strategies to promote critical thinking in our own communities. We occasionally take field trips to interesting locations and participate in community and educational outreach.
We are a subgroup of the Stockton Area Atheists & Freethinkers and welcome all critical thinkers to join us! We encourage the Humanist principles of personal responsibility, humility, and of course, critical thinking.
We are proud to be an affiliate group of the Center For Inquiry
Learn More at: Website | Facebook
Sacramento Area Skeptics
The Sacramento Area Skeptics were created in 2008 in an effort to organize a way for skeptics in the Sacramento area to meet one another. We organize lectures, co-host the annual SkeptiCal Conference, and host monthly social gatherings where like minds can discuss various topics over a pint. We work to promote science and critical thinking in the area and around the world and hope you join us in our effort.
Learn More At: Facebook | Meetup
Wonderfest
Established in 1997 , Wonderfest’s Mission is to inspire and nurture a deep sense of wonder about the world. Wonderfest programs – including public science gatherings in the San Francisco Bay Area and online science discourse & video – aspire to stimulate curiosity, promote careful reasoning, challenge unexamined beliefs, and encourage life-long learning.