Massad F. Ayoob (born July 20, 1948) is an internationally known firearms and self-defense instructor. He was the director of the Lethal Force Institute in Concord, New Hampshire from 1981 to 2009, has taught police techniques and civilian self-defense to both law enforcement officers and private citizens in numerous venues since 1974, and has appeared as an expert witness in several trials. He has served as a part-time police officer in New Hampshire since 1972 and holds the rank of Captain in the Grantham, New Hampshire police department.
Ayoob has authored several books and more than 1,000 articles on firearms, combat techniques, self-defense, and legal issues, and has served in an editorial capacity for Guns Magazine, American Handgunner, Gun Week, and Combat Handguns. Since 1995, he has written self-defense- and firearms-related articles for Backwoods Home Magazine. He also has a featured segment on the television show Personal Defense TV, which airs on the Sportsman Channel in the United States.
While Ayoob has been in the courtroom as a testifying police officer, expert witness, and police prosecutor, he is not an attorney; he is, however, a former Vice Chairman of the Forensic Evidence Committee of the National Association of Criminal Defense Lawyers (NACDL), and is believed to be the only non-attorney ever to hold this position. His published work was cited by the Violence Policy Center in their amicus curiae brief filed with the U.S. Supreme Court in the District of Columbia v. Heller case, and he himself filed a declaration in another amicus brief in this case. His course for attorneys, titled "The Management of the Lethal Force/Deadly Weapons Case", was, according to Jeffrey Weiner (former president of NACDL), "the best course for everything you need to know but are never taught in law school."
Ayoob remains an internationally prominent law enforcement officer training instructor. Since 1987, he has served as chairman of the Firearms Committee of the American Society of Law Enforcement Trainers (ASLET). He also serves on the Advisory Board of the International Law Enforcement Educators’ and Trainers’ Association, and is an instructor at the National Law Enforcement Training Center.