Perfect Symmetry is the fifth studio album by progressive metal band Fates Warning, released in 1989 through Metal Blade Records; a remastered edition was reissued on June 10, 2008 together with a bonus disc containing studio demos, as well as a DVD of live performances from the 1989–90 Perfect Symmetry world tour. It was with this album that the band's more modern, progressive direction was established.
Perfect Symmetry was Fates Warning's second album with singer Ray Alder, who fully participated in the writing of the album. Guitarist and founding band member Jim Matheos describes Alder as having "really started to find his voice and range [on Perfect Symmetry]. It was our second album with him and he did some incredible stuff. It's also when he started to sing in a lower range and we welcomed that because that's the direction we wanted to head into anyway. Before that album, in terms of singing, we were like, 'the higher the better!'"
It was also the band's first album with drummer Mark Zonder, who, according to Matheos, "helped us go in that progressive direction we wanted to go in. It was an even bigger change than when Ray joined a few years before." Zonder confirmed in a 2011 interview that Matheos was pushing the songwriting in a more progressive direction: "It seemed a bit more prog and less thrashy. Seemed like Jim wanted to stretch things out a bit and make them a bit more airy-linear than straight up and down."
Critical reception for Perfect Symmetry has been mostly positive. Robert Taylor of AllMusic gave it a positive review by saying, "This was the recording that established Fates Warning as a progressive band. Their metal influences still dominate the group's overall sound; however, Mark Zonder's unique approach to drumming adds another level of depth and credibility to the music."
The album was, in terms of chart positions, relatively successful; it peaked at #141 on the Billboard 200, the second-highest in the band's history, and remained on the chart for nine weeks. To date it is their most recent album to enter the Billboard 200.