Tadachika NAKAYAMA (around 1131 - April 30, 1195) was a court noble who lived in the Heian period, was commonly called Nakayama Naidaijin (Nakayama, the minister of the center) and was the founder of the Nakayama family.
中山忠親（なかやまただちか、天承元年（1131年）頃－建久6年3月12日(旧暦)（1195年4月23日））は平安時代の公卿、通称を中山内大臣といい、中山家の始祖。