Ubolratana Narinaga

Ubolratana Narinaga, Princess Argavoraraja Kalya (อุบลรัตนนารีนาค,, ), born Princess Bua Ladavalya (บัว ลดาวัลย์; ; 28 November 1846 – 15 October 1901) was a consort of Chulalongkorn, the King of Siam.

She was a daughter of Ladavalya, Prince Bhumindra Bhakdi and Lady Chin.