Domenic Desio Mariani (born 27 July 1958) is an Australian guitarist, vocalist, producer, and songwriter. Mariani has been a member of several bands since the early 1980s, including The Stems, The Someloves, DM3, Datura, The Majestic Kelp and the Domnicks. The Stems is the best-known and most successful of Mariani's projects. Australian musicologist Ian McFarlane described the power pop group as "one of the best live bands on the Australian scene".