King of Ceylon (59-50 B.C.). He was the eldest son of Saddhátissa, but, when his father died, the ministers and monks crowned his younger brother, Thúlatthana, king. Lañjatissa killed Thúlatthana 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 Kuñjarahínaka viháras, the Lañjakásanasálá and a stone mantling for the Kanthakathúpa, in addition to other good works. Mhv.xxxiii.14ff.