James K. Kallstrom (born May 6, 1943) is a former FBI Assistant Director from Worcester, Massachusetts. He led the investigation into the 1996 explosion of TWA Flight 800. He was a supervising agent in the New York investigation of the Cosa Nostra criminal network that resulted in the Mafia Commission Trial of 1985–1986. Kallstrom worked for 27 years at the FBI from February 1970 to December 31, 1997 and has been described as an expert in wiretapping. During his career at the FBI he was a leading advocate of expanding wiretapping power through the Communications Assistance for Law Enforcement Act (CALEA). After graduating from University of Massachusetts Amherst in May 1966, he immediately joined the United States Marine Corps and served from 1966 to 1970 up to the rank of captain. He served two tours in Vietnam War. He left the public sector for private sector employment in the financial industry beginning in 1998. After the 9/11 attacks, Kallstrom returned to the public sector to lead New York state's public safety office.
- "Our People" Marine Corps – Law Enforcement Foundation. Accessed 11 November 2016. Archive URL
- Neidig, Harper (30 October 2016). "Ex-FBI official: Clintons are a 'crime family'".
- "Insiders of the American Mob: Jim Kallstrom, Supervisory Special Agent, FBI".
- Weiser, Benjamin (10 December 1997). "F.B.I.'s Kallstrom, Head of Flight 800 Inquest, to Retire" – via NYTimes.com.
- Jr, James C. Mckinley (17 February 1995). "Wiretap Expert Named to Head New York City Office of F.B.I." – via NYTimes.com.
- "Three who shined after 9/11".
- Ciment, James (2015-03-10). World Terrorism: An Encyclopedia of Political Violence from Ancient Times to the Post-9/11 Era. Routledge. p. 585. ISBN 9781317451525.
- "Comey Faces Sharp Criticism; Ex-FBI Official Calls Clinton A 'Criminal'". NPR.org.