During the 1912–13 English football season, Brentford competed in the Southern League Division One. Two long losing runs led to the Bees' relegation to Division Two on the final day of the season.

After three consecutive mid-table seasons, Southern League Division One club Brentford's directors gambled on generating extra income by also entering the Southern Alliance. Consequently, a larger squad was assembled, with many of the previous season's professionals retained.Willis Rippon was the only significant departure – sold for £250 to Hamilton Academical. Secretary-manager Fred Halliday brought in goalkeeper Ted Price, full back Tommy Fells, centre half Frank Bentley and forwards Frederick Chapple and James Morrison.

Brentford had a torrid beginning to the season, losing 12 of the first 15 matches. Of the starting forward line of Billy Brawn, Jack Sibbald, Frederick Chapple, Bob McTavish and Patsy Hendren, Chapple and Hendren were the only players to score during the period, which lead manager Halliday to sign Chelsea's Hugh Dolby and Bill Smith from non-league football. Dolby failed to score in four matches and was dropped, while Smith helped contribute to a revival in mid-November, after full back Dusty Rhodes replaced Fred Halliday as manager on 13 November 1912. Between 9 November and 5 March 1913, Brentford lost just three matches, but another loss of form and injuries to the forward line led to seven consecutive defeats in March. A crucial 4–1 victory over Brighton & Hove Albion on 5 April boosted the Bees' survival chances, but a defeat and a win in the following two matches respectively put Brentford one place above the relegation zone going into the final day, level on points with Norwich City, but ahead by virtue of a 0.774 goal average.

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