John Langdon (harness racing)

John William Langdon (24 August 1947 – 15 January 2026) was a New Zealand driver and trainer of Standardbred racehorses. He was associated with many champions and was a leading driver of harness horses in New Zealand.

He was notable for winning the Inter Dominion Championship three times, including twice in 1975 when aged 27. The Inter Dominion is the premier trotting series of races between Australia and New Zealand. He is also an inductee in the Inter Dominion Hall of Fame. Langdon also won the Auckland Trotting Cup and the New Zealand Trotting Cup with Neroship. These are the two top races in New Zealand.