Admiral ML Usni was the son of former prime minister MR Seni Promoj and Khunying Usana Pramoj Na Ayutthaya.
He was named a national artist for performing art in 1994.
He was also former manager of the Crown Property Bureau.
Royal bath watering ceremony will be held at Benjamabopit temple at 5.00 pm today.
He was survived by wife and five sons.