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Transatlantic

Current
Pete Trewavas	Bass, Vocals (1999-2002, 2009-present)
See also: Kino, Marillion
Mike Portnoy	Drums, Vocals (1999-2002, 2009-present)
See also: Metal Allegiance, Sons of Apollo, John Arch, ex-Inner Sanctum, ex-Liquid Trio Experiment, ex-Rising Power, ex-Twisted Sister (live), ex-Liquid Tension Experiment, ex-Majesty, Flying Colors, The Winery Dogs, Yellow Matter Custard, Bigelf (live), ex-Dream Theater, ex-S.A. Adams, ex-Altitudes & Attitude (live), ex-Fates Warning (live), ex-John Petrucci (live), ex-Overkill (live), ex-Adrenaline Mob, ex-OSI, ex-Amazing Journey, ex-Cygnus and the Sea Monsters, ex-Hammer of the Gods, ex-Avenged Sevenfold (live), ex-Stone Sour (live)
Roine Stolt	Guitars, Vocals (1999-2002, 2009-present)
See also: Anderson/Stolt, The Flower Kings, ex-Fantasia (Swe), ex-Kaipa, ex-Orexis, ex-The Tangent
Neal Morse	Keyboards, Vocals (1999-2002, 2009-present)
See also: Flying Colors, Neal Morse, Yellow Matter Custard, ex-Spock's Beard
Past (Live)
Daniel Gildenlöw	Guitars, Vocals, Keyboards, Percussion (2010, 2017)
See also: Pain of Salvation, ex-Crypt of Kerberos, ex-Hammer of the Gods, ex-Reality, ex-The Flower Kings
Ted Leonard	Guitars, Keyboards, Percussion (2014, 2017)
See also: Affector, Enchant, Thought Chamber, Spock's Beard
Bill Hubauer	Guitars, Vocals, Keyboards (2017)

Pete Trewavas	Bass, Vocals (1999-2002, 2009-present)
See also: Kino, Marillion
Mike Portnoy	Drums, Vocals (1999-2002, 2009-present)
See also: Metal Allegiance, Sons of Apollo, John Arch, ex-Inner Sanctum, ex-Liquid Trio Experiment, ex-Rising Power, ex-Twisted Sister (live), ex-Liquid Tension Experiment, ex-Majesty, Flying Colors, The Winery Dogs, Yellow Matter Custard, Bigelf (live), ex-Dream Theater, ex-S.A. Adams, ex-Altitudes & Attitude (live), ex-Fates Warning (live), ex-John Petrucci (live), ex-Overkill (live), ex-Adrenaline Mob, ex-OSI, ex-Amazing Journey, ex-Cygnus and the Sea Monsters, ex-Hammer of the Gods, ex-Avenged Sevenfold (live), ex-Stone Sour (live)
Roine Stolt	Guitars, Vocals (1999-2002, 2009-present)
See also: Anderson/Stolt, The Flower Kings, ex-Fantasia (Swe), ex-Kaipa, ex-Orexis, ex-The Tangent
Neal Morse	Keyboards, Vocals (1999-2002, 2009-present)
See also: Flying Colors, Neal Morse, Yellow Matter Custard, ex-Spock's Beard

Past
Daniel Gildenlöw	Guitars, Vocals, Keyboards, Percussion (2010, 2017)
See also: Pain of Salvation, ex-Crypt of Kerberos, ex-Hammer of the Gods, ex-Reality, ex-The Flower Kings
Ted Leonard	Guitars, Keyboards, Percussion (2014, 2017)
See also: Affector, Enchant, Thought Chamber, Spock's Beard
Bill Hubauer	Guitars, Vocals, Keyboards (2017)