Joseph Stephen Holt (November 8, 1947 – April 6, 2014) was an American murderer and suspected serial killer who was posthumously linked via DNA to two murders committed in South Lake Tahoe, California from 1977 to 1979. Holt, a real estate agent, was never convicted in his lifetime and died without being considered a suspect in 2014. Since his identification in 2019, authorities have been investigating whether he could be responsible for more violent crimes committed in the state.