During the 1934–35 English football season, Brentford competed in the Football League Second Division. The Bees led the league for much of the second half of the season and were promoted as champions to the First Division for the first time in the club's history. Brentford also won the London Challenge Cup for the first time.

Brentford manager Harry Curtis made minor additions to his squad in the 1934 off-season, his only significant purchases being left back George Poyser from Port Vale for a club record £1,150 fee and goalkeeper James Mathieson from Middlesbrough. After two years on the fringes, young right half Duncan McKenzie would break into the first team squad during the season and George Robson would return in attack, having been frozen out during the previous season. Once the season got underway, despite 1933–34's leading scorers Jack Holliday and Idris Hopkins finding the net, it was Ernest Muttitt who inspired the Bees to start the season with a seven-match unbeaten run – a run which took the club to the top of the table, with Muttitt scoring seven goals in a five-match spell.

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