During the 1966–67 English football season, Brentford competed in the Football League Fourth Division. In a season overshadowed by the events of 19 January 1967, a promotion charge was derailed by five defeats in the final six matches of the campaign.

In a bid to buy Brentford out of the bottom two divisions of the Football League, the large transfer funds made available by chairman Jack Dunnett to previous managers Malky MacDonald and Tommy Cavanagh had left the club with mounting debts. Cavanagh had spent £30,000 on seven players since being appointed to the manager's job in January 1965, with five key attacking players (Bloomfield, Lazarus, Ward, Bonson and Fielding) being sold on for a total less than half that sum during the course of the 1965–66 season, towards the end of which he was sacked. New manager Billy Gray failed to turn Brentford around and the club would begin the 1966–67 in the Fourth Division. An average attendance of 11,000 would be needed to break even, a record which had been falling year on year since the 1963–64 season. With no money available to bring in established players, manager Gray brought in a number of youngsters, including his nephew John Richardson.

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