Harold Kingsford Brainsby (5 December 1910 – 3 April 1975) was a New Zealand field athlete who won a bronze medal in the triple jump at the 1934 British Empire Games in London.

[4] On 23 March 1940, Brainsby married Mary Priscilla Wrightson at St Aidan's Church in the Auckland suburb of Remuera,[5] They adopted a daughter in 1957 and divorced in 1960.

[3] Brainsby competed for New Zealand at the 1934 British Empire Games, where he won the bronze medal in the triple jump, with a distance of 47 feet 11+1⁄2 inches (14.62 m).

[5] He rose from the rank of sergeant to become a major on General Freyberg's staff, and returned to New Zealand after the battle of El Alamein.

[3][8] A noted contract bridge player, Brainsby was a member of the Auckland four that won the New Zealand championship on several occasions.