Sun Jun may refer to:
Sun Jun (Eastern Wu) (219–256), regent for the emperor Sun Liang of Eastern Wu during the Three Kingdoms period Sun Jun (engineer) (born 1926), Chinese tunnel and underground structure engineer, member of the Chinese Academy of Sciences Sun Jun (basketball) (born 1969), Chinese basketball player Sun Jun (badminton) (born 1975), Chinese badminton player Sun Jun (rower) (born 1975), Chinese rower Sun Jun (footballer) (born 1993), Chinese footballer