Liu Jun (劉濬), courtesy name Boshen (伯深), was an official of the Chinese Five Dynasties and Ten Kingdoms Period state Southern Han, at one point serving as a chancellor.
His father Liu Chongwang was a prominent late-Tang official and served as a chancellor during the reign of Emperor Zhaozong.
He remained at Qinghai's capital Guang Prefecture (廣州) after Liu Chonggui's death in the middle of Emperor Zhaozong's Qianning era (894-898).
Toward the end of Liu Yan's Qianheng era (917-925), there was a time when Liu Yan mobilized an army and placed it at Chao Prefecture (潮州, in modern Chaozhou, Guangdong), preparing to launch it against Southern Han's northeastern neighbor Min.
He often encouraged Liu Yan to love his people and rest his army, in terms that were delicate but firm.