Superintendent/Commander George Gideon of Scotland Yard is a fictional policeman who appeared in 26 police procedural novels, 21 of which were written by John Creasey under the pseudonym J.J. Marric, and published between 1955 and 1976.

[1] Portraying Gideon as a master balancing the management of cases and the workings of law enforcement, it has been considered his "most famous police procedural series".

One of Creasey's technical advisers for the series was Commander George Hatherill, who had organized the British Army's Special Investigation Branch during World War II, and was the operational head of the Yard's CID from 1954 until 1964 (the same position Gideon held in fiction) during which time he was awarded the OBE.

Their relationship has been strained by the loss of a seventh child while Gideon was on the Flying Squad (prior to the start of the series).

In Gideon's Day , the first book in the series, the children are described as Tom (age 26); Prudence (18+), Priscilla (15+), Matthew (14), Penelope (12), and Malcolm (8).

Penny, the Gideons' youngest daughter, is mentioned most frequently, in part because of her on-and-off relationship with an older police officer, Alec Hobbs.