King of Sri Lanka (171-4 A.C.) He was the son of Vasabha and his wife was the daughter of King Subha.

He built the Mahā-maṅgala-vihāra and his wife built the Mātu-vihāra in honour of a monk who had given her his blessing.

Vaṅkanāsika’s son was Gajabāhuka-gāmaṇī. Mhv.xxxv.108 ff; Dpv.xxii.12, 27 f.