Robert David Steele Vivas (born 16 July 1952) is an American activist and a former Central Intelligence Agency clandestine services case officer known for his promotion of open source intelligence (OSINT). He is the founder and CEO of OSS.Net as well as the Golden Candle Society. He was a Marine Corps infantry and intelligence officer for twenty years and was the second-ranking civilian (GS-14) in Marine Corps Intelligence Activity from 1988–92, and was also an adjunct instructor at Marine Corps University in the mid-1990s.