Tim Ian Grose, known professionally as Lord Tim, is an Australian musician. Based in Wollongong, New South Wales, he is best known as the founder of the power metal band Dungeon. The band started in 1989, released several albums, and was considered one of the leading metal bands in Australia. When the band broke up in 2005 after an international tour with Megadeth, Lord Tim continued its legacy with another band he had created, LORD, for which he is singer, guitarist and principal songwriter.

Dungeon was an Australian melodic power metal band based in Sydney, considered by some as one of Australia's leading metal bands. The group existed from 1989 to 2005, released six full-length albums, and toured heavily both throughout Australia and internationally.