In July 1924, Dunbar United were formed as a juvenile club, but after one season in the local juvenile league the committee decided to play junior football and the club was elected into the Berwickshire Junior League where they won their first trophy after beating the Kings Own Scottish Borderers (K.O.S.B) in the final of the Lees Cup at Duns after a successful protest about one of the K.O.S.B.

The first trophy after the war was in season 1955–56, when the club won the RL Rae Cup, beating local rivals Haddington Athletic in the final.

However, the greatest moment in the history of the club came in May 1961, when Cambuslang Rangers were defeated 2–0 in the final of the Scottish Junior Cup.

The Brown Cup was won for a second time in June 2000, under co-managers Jocky Miller and Michael Wojtowycz, defeating Haddington Athletic 2–1 in the final at Bonnyrigg and after moving to New Countess Park in 2001 the club had mixed fortunes under manager Willie Pearson winning promotion to the First Division at the end of season 2002–03 before being relegated at the end of season 2004–05 despite an enjoyable run to the last 16 of the Scottish Junior Cup only losing out to Lugar Boswell Thistle on penalties after two drawn games.

After the leagues were reorganised in 2006–07 the club played in the lower tier of the three divisions and was typically in a low position at the end of each season.

The club made their senior Scottish Cup debut in season 2021–22, reaching the second round before being beaten in a replay by Lothian Thistle Hutchison Vale at Ainslie Park.

Other Honours As of 26 June 2024[1] Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.