Daksinajar Naradhirajbutri[1] (Thai: ทักษิณชา นราธิราชบุตรี, RTGS: Thaksinacha Narathiratbuttri, Dakṣiṇajā Narādhirājaputrī; 18 September 1852 – 13 September 1906) was a consort of her half-brother Chulalongkorn, the King of Siam.

She was a member of Siamese royal family and a daughter of King Mongkut and Chan Suksathit, one of Mongkut's concubines.

[2] She was married to her agnatic half brother, King Chulalongkorn, in circa 1871.

Later, she was styled as princess consort.