Boon is a British television drama series starring Michael Elphick, David Daker, and later Neil Morrissey. It was created by Jim Hill and Bill Stair, filmed by Central Television for ITV, and originally broadcast between 1986 and 1992 with a delayed episode which aired in 1995. It revolved around the life of an ex-fireman called Ken Boon, a motorcycle-obsessed small time businessman who, at the same time, acts as a private investigator, bodyguard and general troubleshooter. Since 16 January 2017, it has been rerun on UKTV channel Drama. The first two series are currently streaming on BritBox.

The theme tune, "Hi Ho Silver" by Scottish singer Jim Diamond, became a UK top ten hit single in 1986.

Ken Boon (Elphick) and Harry Crawford (Daker) are both old-fashioned "smokeys" (firemen) in the West Midlands Fire Service. In episode one, Crawford takes early retirement and moves to Spain to open a bar, leaving Ken behind. Ken attends a house fire in which a child is trapped upstairs. Realising that he must act quickly, he goes into the house without breathing apparatus and rescues the child, but he is severely injured by inhaling toxic smoke. He attempts to prove that he can still make it, but he is declared unfit for duty after collapsing during a practice simulation because his lungs have been permanently damaged, and he is forced to leave the fire service.

The basic premise of the show revolves around Ken and Harry's various business ventures, which become intertwined with various shady characters or criminal underworld figures, often requiring them to outwit or fight their way out of trouble. Along the way, the pair often encounter others in need or have been hard done by, and many of the episode sub-plots have various wrongs being put right. In later series, this became the main focus of the show, as Boon becomes a private investigator and bodyguard, with Harry's business activities becoming more of a backdrop. The comedic element usually comes from Harry's frequent minor misfortunes or his best-laid plans going awry in unexpected and sometimes farcical ways - with Ken usually having to come to his rescue and sort out the mess.

In the first series, Ken starts a market garden, the Ponderosa, in a village about 10 miles outside Birmingham, but finds that it is not working out. Harry returns from Spain after his wife leaves him for a young hairdresser. Harry has acquired a hotel in Birmingham, and offers Ken a job and a home there. On Ken's behalf, and without his knowledge, Harry places a box-number advertisement in a newspaper stating: "Ex-fireman seeks interesting work. Anything legal considered". In the second series, both Ken and Harry have expanded their business interests, with Harry investing in a larger hotel and Ken starting a motorcycle courier firm called "Texas Rangers", where he recruits fellow biker Richard "Rocky" Cassidy (Morrissey), whose general dim-wittedness provides an extra layer of comic relief.

Over the course of the third and following series, Boon establishes two private investigation firms, BDI (Boon-Daly Investigations) and Boon Investigations; and a security firm, CBS (Crawford Boon Security), a partnership with Harry in which Boon is responsible for private investigations and Harry for security. In series 1–3, Harry runs two hotels, the Grand Hotel and the Coaching Inn, and a ballroom, the Plaza Suite. In series 4, he operates a country club, Woodcote Park, before going into business with Boon in series 5.

The series moved away from Birmingham to Nottingham at the beginning of series 4, when production moved to Central Television's studios in Nottingham. The Birmingham episodes (series 2–3, and exteriors for series 1) were shot on film, but the Nottingham episodes (series 4–7) were shot on videotape, as were interior scenes for series 1. Apart from the studio interiors of series 1, all filming was done on location.

The cast included Michael Elphick (Ken Boon) and David Daker (Harry Crawford). Neil Morrissey joined in the second series as Rocky, his first major television role. Other regular characters were played by Rachel Davies (Doreen Evans), Julie Graham (Moira Connolly), Lesley-Anne Sharpe (Debbie Yates), Amanda Burton (Margaret Daly), Elizabeth Carling (Laura Marsh), Brigit Forsyth (Helen Yeldham), Saskia Wickham (Alex Wilton), Joan Scott (Ethel Ellard) and Gordon Warnecke (Hanif Kurtha). Jerome Flynn appeared in the series in one of his earlier roles and Christopher Eccleston also had a small role, one of his first.