Tian Jun (858–903) was a general and warlord during the late Tang dynasty.
Tian Jun may also refer to: Tian Jun (rower) (born 1982), Chinese rower James Tien (actor) (born 1942), Hong Kong actor Xiao Jun (1907–1988), Chinese author, who used the pseudonym Tian Jun early in his career
See also Tianjun County, a county in northern Qinghai, China