Y.A.M. Dato' Haji Mohammad Jan bin Abdul Ghani (born 10 August 1940 at Kampung Rokan, Johol), Dato' Johan Pahlawan Lela Perkasa Setiawan, is the 14th and current Undang of Luak Johol, one of the traditional states of Negeri Sembilan in Malaysia.Mohammad Jan was installed as Dato' Baginda Tan Mas (heir apparent) on 30 December 1988, during the second month of the reign of the previous undang, Dato' Abdul bin Ali. He succeeded as undang on the death of Dato' Abdul on 13 March 2007.