The Five Find-Outers and Dog, also known as The Five Find-Outers, is a series of children's mystery books written by Enid Blyton.

Set in the fictitious village of Peterswood based on Bourne End, close to Marlow, Buckinghamshire, the children Fatty (Frederick Trotteville), who is the leader of the team, Larry (Laurence Daykin), Pip (Philip Hilton), Daisy (Margaret Daykin), Bets (Elizabeth Hilton) and Buster, Fatty's dog, encounter a mystery almost every school holiday, always solving the puzzle before Mr Goon, the unpleasant village policeman, much to his annoyance.

At the beginning of the series Larry is 13; Fatty, Pip, and Daisy are 12; while Bets is 8.

The series takes place in successive school holidays, beginning with the Easter holidays and cycling through the summer and Christmas holidays.

During each holiday the children solve a mystery – until The Mystery of the Invisible Thief (summer holidays), after which there is a break until the next summer holidays in which they solve "The Mystery of the Vanished Prince".