Massad F. Ayoob (born July 20, 1948) is an American firearms, self-defense instructor and security advisor.

He has taught police techniques and civilian self-defense to both law enforcement officers and private citizens since 1974.

He has a featured segment on the television show Personal Defense TV, which is broadcast on the Sportsman Channel in the US.

Ayoob is believed to be the only non-attorney to serve as Vice Chairman of the Forensic Evidence Committee of the National Association of Criminal Defense Lawyers (NACDL), a position he formerly held.

[4][5] His course for attorneys, titled "The Management of the Lethal Force/Deadly Weapons Case", was, according to Jeffrey Weiner: "the best course for everything you need to know but are never taught in law school.