Jack Green (born 6 October 1991) is a British sprint athlete who specialises in the 400m distance, along with the hurdles and the 4 × 400 m relay.

After the Bislett Games, he spoke to former hurdler Kriss Akabusi who gave him advice as he suffered from similar issues during his career.

[5] At the start of July 2012, Green was named to the athletics squad for the 2012 Summer Olympics, to compete in the 400 metres hurdles and 4x400 relay.

[7] The media coverage of the event noted the fact that Green had written "CHIN DOWN, FLAT BACK" in capital letters on the inside of his left forearm prior to the 400 metre race.

[8] Having suffered from depression throughout 2012,[9] Green announced in 2013 that, despite a full recovery, he was taking a break from the sport to allow his health to improve further, and leaving the British Athletics high-performance funding programme to do so.