Parâkramabâhu VI (1410/1412/1415–1467) was a king in the Sri Lankan kingdom of Kotte. He is the last great Sri Lankan king to have united the whole island of Sri Lanka under one flag. His rule is famous for the political stability which he maintained in that time period and the thriving of literature, especially poetry. Classical literature (prose and verse) as well as many rock inscriptions and royal grant letters (patent letters, sannas) have been found, rendering much information pertaining to this period.