Susan Gerbic (born 1962) is an American studio photographer who became known as a scientific skepticism activist, mostly for exposing people claiming to be mediums.

In 2002, she was awarded a BA in Social & Behavioral Studies by California State University, Monterey Bay.

[7] Gerbic worked at Lifetouch, a portrait studio in JC Penney in the Northridge Mall in Salinas, from 1982[1] for 34 years, including as manager.

[7] Much of Gerbic's activism has consisted of organizing sting operations against people claiming to be mediums.

[7][11] The New York Times Magazine reported in February 2019, in an interview with Gerbic, that GSoW had 144 editors who had worked on nearly 900 Wikipedia pages.