Mubarak Sultan Faraj Al-Nubi (Arabic: مبارك سلطان النوبي فرج; born 30 December 1977) is a retired Qatari athlete who specialized in the 400 metres hurdles.

He is the brother of Olympic long jumper Abdul Rahman Al-Nubi.

[1] He represented his country at the 2000 Sydney Olympics and competed at the World Championships in Athletics in 1997 and 2003.

At regional level, he won three gold medals in the 400 m hurdles at the Asian Athletics Championships and participated at three Asian Games, being the runner-up in 2002.

This biographical article relating to Qatari athletics is a stub.