Top 10 Metal Musicians Who Started Significant Side Projects

Projects can be metal or non-metal but musicians who started them must be metal.
The Top Ten
1 Mike Portnoy - Liquid Tension Experiment, Metal Allegiance, Adrenaline Mob Michael Portnoy is an American drummer primarily known as the former drummer, backing vocalist, and a co-founder of the progressive metal/rock band Dream Theater. Known for his technical skill as a drummer, Portnoy has won 30 awards from the Modern Drummer magazine.
2 Tobias Sammet - Avantasia Tobias Sammet is a German metal musician, best known as the vocalist and primary songwriter of the power metal band Edguy, as well as the founder, main singer and bassist of the metal opera Avantasia.
3 Jon Schaffer - Demons & Wizards, Sons Of Liberty Jon Ryan Schaffer is an American heavy metal musician. He is best known as the guitarist and last remaining original member of the Florida-based heavy metal band Iced Earth, which he formed in 1985 under the name "Purgatory".

He started 2 side projects, both are metal.

4 Alex Skolnick - Alex Skolnick Trio, Metal Allegiance Alexander Nathan Skolnick is an American metal and jazz guitarist who is the lead guitarist of the Bay Area thrash metal band Testament, and heads the jazz band Alex Skolnick Trio.

A musician who started 2 side projects.
Alex Skolnick Trio is a jazz trio. Yep, our thrasher is also a jazzer.

5 Mikael Akerfeldt - Bloodbath Lars Mikael Åkerfeldt is a Swedish musician, prominently known as the lead vocalist, guitarist, and primary songwriter of progressive death metal band Opeth, as well as being the former vocalist of death metal supergroup Bloodbath for three albums up until 2012. ...read more.
6 Phil Anselmo - Down Philip Hansen "Phil" Anselmo is an American musician who is best known as the former lead vocalist of the heavy metal band Pantera. He currently is the vocalist of heavy metal bands Down and Superjoint Ritual.

Formed in 1991. Because Pantera disbanded, it's not a side project for him anymore but it was for about 13 years.

7 Ron Jarzombek - Blotted Science Ron Jarzombek is an American metal guitarist hailed as one of the most influential progressive metal guitarists and has been called "the Godfather of Technical Metal". He's best known for his work with WatchTower, Spastic Ink, and Blotted Science, featuring Alex Webster of Cannibal Corpse. His older ...read more.
8 Hansi Kürsch - Demons & Wizards Hansi Kürsch, born Hans Jürgen Kürsch, is the lead singer, lyricist, co-composer and bassist for German power metal band Blind Guardian . Heavily influenced by Freddie Mercury, he creates a huge choir effect by overdubbing his own voice multiple times in complex, overlapping vocal harmonies. He records ...read more.
9 David Ellefson - Metal Allegiance David Warren "Dave" Ellefson is an American bassist and co-founding member of the American thrash metal band Megadeth from 1983-2002 and again from 2010-2021.
10 Russell Allen - Adrenaline Mob, Allen/Lande Russell Allen is a singer and lyricist best known as the vocalist of American progressive metal band Symphony X.
The Contenders
11 Anders Nyström - Bloodbath
12 Al Jourgensen - 1000 Homo DJs, Revolting C****, Lard and More Alain David Jourgensen (born Alejandro Ramírez Casas) is a Cuban-American musician, best known as the founder and frontman of industrial metal band Ministry (a pioneering band in the industrial metal genre).
13 Tony Kakko - Northern Kings Toni Kristian "Tony" Kakko is a Finnish musician, composer and vocalist. He is mainly known as the vocalist, primary songwriter, and creative force in the band Sonata Arctica since 1996.
14 Dan Swanö - Bloodbath Dan-Erland Swanö is a Swedish musician who is currently the vocalist, guitarist, ex-bassist and ex-drummer for the band Nightingale, lately vocalist, keyboardist and drummer for the band Witherscape, as well as the Owner of Unisound but he achieved fame as the vocalist and songwriter of progressive ...read more.
15 Jonas Renkse - Bloodbath Jonas Petter Renkse is a founding member, songwriter, lead vocalist and ex-drummer of the band Katatonia, founding member, songwriter, bassist, backing vocalist, ex-guitarist of the band Bloodbath.
16 Jarkko Ahola - Northern Kings Jarkko Kalevi Ahola is a Finnish performing artist, composer and singer, best known as a metal singer. He is the vocalist, bass player and one of the three songwriters of the metal band Teräsbetoni. He also started a solo career as Ahola, a metal band.
17 Marco Hietala - Northern Kings Marko Tapani "Marco" Hietala is a Finnish heavy metal vocalist, bass guitarist and songwriter (Nightwish, Tarot).
18 Juha-Pekka JP Leppäluoto - Northern Kings
19 Tobias Forge - Ghost
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