Makhgalyn Bayarjavkhlan (; born 18 June 1978 in Nömreg sum, Zavkhan aimag) is a Mongolian judoka who competed in the super heavyweight division (+100 kg). He was also the nation's flag bearer at the opening ceremony in the 2008 Summer Olympics. Before the Games started, Makhgal competed at the 2008 Asian Judo Championships, where he placed seventh in the super heavyweight division.