Fourth Dimension is the fourth studio album by power metal band Stratovarius, released in 1995 through Noise Records. It was the first Stratovarius album 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, as well as the last to feature a founding member. 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.