John Henry FitzSimons (born 12 February 1943) is a British former track and field athlete who competed in the javelin throw.

He was the gold medallist at the 1966 British Empire and Commonwealth Games, winning with a games record throw of 79.78 m (261 ft 8+3⁄4 in).

[3] He was the 1964 winner of the AAA Championships and was runner-up tin Finland's Jorma Kinnunen in 1966.

[4] As well as his 1966 gold, he returned to win a bronze medal at the 1970 British Commonwealth Games, helping England to the first ever medal sweep of the javelin by a nation, alongside compatriots Dave Travis and John McSorley.

[5] He represented Great Britain at the 1966 European Athletics Championships but ranked only 22nd overall.