King of Ceylon (59-50 B.C.). He was the eldest son of Saddhātissa, but, when his father died, the ministers and monks crowned his younger brother, Thūlatthana, king. Lañjatissa killed Thūlatthana after one month, and ruled for nine years and fifteen days. At first he was very indifferent towards the monks, but later made amends. He built the Arittha and Kuñjarahīnaka vihāras, the Lañjakāsanasālā and a stone mantling for the Kanthakathūpa, in addition to other good works. Mhv.xxxiii.14ff.