Harrow Borough Football Club is an English football club based in Harrow, London. They were founded in 1933 and compete in the Southern League Premier Division South. Harrow Borough's home ground is Earlsmead Stadium, which has a capacity of 3,070. Harrow Borough moved into Earlsmead Stadium in 1934 and have kept it as their home stadium since then. Harrow Borough's colour is red, which is the colour of their home kit. Their crest depicts the coat of arms of the London Borough of Harrow.
Harrow Borough have rejected the chance to join the Football Conference, now known as the National League, twice due to financial reasons. Harrow have won the Isthmian League Premier Division once, in 1983-84. They have won the Middlesex Senior Cup, Middlesex Charity Cup, Harrow Senior Cup and George Ruffell Memorial Shield. Their most recent cup achievements have been winning the Middlesex Senior Cup and Middlesex Charity Cup, both in 2015 and reaching the first round of the FA Cup in 2016-17, for the fourth time in their history, when they lost to Northampton Town. Their most recent league achievement has been reaching the Isthmian League Premier Division Playoffs in 2010-11.