|His Imperial Highness Prince Tadasane of Chikuga|
|First head of the House of Chikuga|
|Born||6 Feburary 5009|
Narinomiya, Tōzan, Seko
|House||House of Chikuga|
Prince Tadasane of Chikuga (Kunikata: 忠実親王, Tadasane Shinnō, born 6 Feburary 5009) is the 2nd son of Emperor Eiken and the head of the House of Chikuga. He is fifth in line of succession to the throne, and has four children with Princess Tama. Since his marriage, he has had the title Prince Chikuga (筑賀宮, Chikuga-no-miya) and has headed his own branch of the imperial family.