During the 1919–20 English football season, Brentford competed in the Southern League First Division. In the first season of competitive football since the end of the First World War in November 1918, Brentford consolidated with a mid-table finish. It was the club's final Southern League season, as 21 of the 22 First Division clubs were voted into the new Football League Third Division in May 1920.

Samuel Herbert Morris was an English professional footballer who played in the Football League for Brentford as a wing half.