The 1950–51 Football League season was Birmingham City Football Club's 48th in the Football League and their 20th in the Second Division, having been relegated from the First Division in 1949–50. They finished in 4th position in the 22-team division. They entered the 1950–51 FA Cup at the third round proper and reached the semi-final, in which they lost to Blackpool after a replay.

Twenty-two players made at least one appearance in nationally organised competitive football during the season, and there were thirteen different goalscorers. Goalkeeper Gil Merrick, full-back Arthur Atkins and winger Johnny Berry were ever-present in the 48-game season, and Cyril Trigg was the leading goalscorer with 19 goals, of which 17 came in league matches.

As part of the Festival of Britain, friendly matches were arranged at the end of this season between British clubs and teams from other parts of the British Isles and from continental Europe. Birmingham played in four such matches, against teams from Scotland, Ireland and Yugoslavia.

Note that not all teams completed their playing season on the same day. Birmingham were in third position after their last game of the season, on 28 April, but by the time the last game was played, on 5 May, they had been overtaken by Cardiff City and finished fourth, three points behind the promotion places.

Birmingham beat Manchester City, Bristol City, and First Division teams Derby County and Manchester United, without needing a replay and while conceding only one goal, to reach the semi-final, in which they faced another First Division team, Blackpool. The Times suggested that the fixture, "as always when Matthews plays, will present the problem of how to smother the greatest player in the history of English football", warning that "to smother Matthews—should they even succeed—is not to smother Blackpool." Supporters queued all night for tickets; the 20,000 allocation sold out within two hours. In addition to several special trains, the supporters' club chartered 60 coaches to travel to Maine Road, Manchester, where touts were offering tickets for sale at four times face value.

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