Nikki no Ie (Houses with Diaries) is a nickname used to describe noble houses whose members kept diaries recording events relating to their families, and who passed these diaries down from generation to generation.
日記の家（にっきのいえ/にきのいえ・日記之家）とは、先祖代々の手による家の日記（家記）を伝蔵した公家の呼称。