Captain Malcolm Campbell-Johnston (14 April 1871 – 12 March 1938) was a Conservative Party politician.
Called to the bar at the Inner Temple in 1893, he spent time in the United States and South Africa before returning the to the United Kingdom in 1906. He unsuccessfully stood for parliament for a Yorkshire constituency at the December 1910 general election.
During the First World War he served in various regiments, reaching the rank of captain.
He made his first foray into local politics at the London County Council election in 1919, standing for the Conservative-backed Municipal Reform Party at Poplar, Bow and Bromley but was not elected. Three years later he was elected to the council as a representative of Wandsworth, Balham and Tooting.
In 1931 he was elected to the House of Commons as member of parliament for East Ham South. He resigned his county council seat at the 1934 council elections. He only served a single term in parliament, losing his seat at the 1935 general election.
He returned to the county council in 1937, when he was elected to represent Lewisham West. He died in office.
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