[4] (born 7 January 1989 in Kota Bharu, Kelantan) is a Malaysian professional footballer who plays as a goalkeeper for Malaysia Super League club Sabah.

[11] In 2010, he finally have the chances with the senior squad due to Halim Napi retirement and a blunder from Syed Adney during their match against Kedah in 2010 Malaysia Super League.

He ended the season with Kelantan winning their first league title, making 24 appearances and he also won the Best Goalkeeper Award for the second consecutive time.

[19][20] In 2012, Khairul Fahmi continue his fine form which saw Kelantan won their first ever treble in the Malaysian League.

[20] On 7 May 2018, Khairul Fahmi signed a six-month contract with Melaka United until the end of the current season.

Khairul Fahmi made his debut against Oman on 3 September 2010 replacing Sharbinee Allawee during the second half.

In November 2010, Khairul Fahmi was called up to the Malaysia national team by coach K. Rajagopal for the 2010 AFF Suzuki Cup.

On 26 November 2012, Malaysia's opening group match against Singapore ended up with the Malaysian side losing 0–3.

In the second half, veteran Singaporean forward Aleksandar Đurić completed the rout against the Tigers with the third and final goal of the game.

However, since Kim Pan-Gon was made in charge of the Malaysian national football team in 2022, he was deemed too short to play in goal, losing his spot to taller and younger goalkeepers.