Fourth Dimension is the fourth studio album by power metal band Stratovarius, released on 11 April 1995 through Noise Records. The album is the band's first to feature vocalist Timo Kotipelto as well as the last with keyboardist Antti Ikonen and drummer Tuomo Lassila, thus being the last Stratovarius album to date featuring an all-Finnish line-up. Founding member and guitarist Timo Tolkki, who had served as the band's vocalist for their first three albums, still provided background vocals on Fourth Dimension before handing over lead singing duties to Kotipelto for all subsequent albums.
Steve Huey at AllMusic gave Fourth Dimension four stars out of five, describing it as "melodic Euro-metal" and picking up where Dreamspace (1994) left off. He recommended it for fans of Judas Priest, Scorpions and other similar heavy metal bands.