Arrington de Dionyso (b. 1974/1975 (age 46–47)) is an Olympia, Washington-based artist and experimental musician. He was a member of Old Time Relijun since the 1990s. During Old Time Relijun's hiatus, he formed a new band based on Indonesian music called Malaikat dan Singa. De Dionyso directed Reak: Trance Music and Possession in West Java, a documentary film about the music of an Indonesian trance ceremony; the film was shown by the Olympia Film Society in May, 2016. He is also a co-founder of the Olympia Experimental Music Festival.