Stacy Brooks (born April 8, 1952) is a former senior executive of the Church of Scientology International (CSI) and the Sea Organization based in the United States. For over 20 years, Brooks was also a member of the Church, working in its upper level management in Los Angeles for almost fifteen years.

After leaving in 1989 Brooks joined the Lisa McPherson Trust, served as an expert witness in many high-profile Scientology lawsuits, and has made many television appearances criticizing Scientology, on programs including Dateline, 20/20 and 60 Minutes.