John Campbell Colquhoun (23 January 1803 – 17 April 1870) was a Scottish writer and politician.
[2] In 1832 Colquhoun is listed as living at 10 Melville Street in the west end of Edinburgh, then newly built.
A wealthy Conservative and evangelical, Colquhoun served as president of the Glasgow Society.
[2] Colquhoun wrote political and religious pamphlets on questions of the day in Scotland and Ireland.
He was also the author of:[2] In 1827 Colquhoun married Henrietta Maria, daughter of Thomas Powys, 2nd Baron Lilford.