Self-published on the web

• The Cosmonauts (w/a, 2007)
• Homesick (w/a, 2008)
• Мотобол (w/a, 2008)
• Shipwrecked with Dan the Gorilla (w/a):
  • Originally an unfinished 24-hour webcomic, 2008.
  • Redrawn and published at Study Group Comics, 2012.
• Murder Book (tpb, 184 pages, Dark Horse, 2015, ISBN 1-6165-5681-1) includes:
  • "Catching Up" (a, with Ed Brisson, 2010)
  • "Skimming the Till" (a, with Ed Brisson, 2010)
• Группа Крови (Blood Group) (w/a, 2010)
• Man in the 51st Millenium (w/a, 2010)
• Barfight (w/a, for Arthur, 2010)
• Homeward Bound (w/a, for Study Group Comics, 2012)
• 8.30 AM, April 3rd 1996 (w/a, for Study Group Comics, 2012)

Image Comics

• Prophet (w/a, with Brandon Graham (comics) and various artists, Extreme Studios, 2012–2016) collected as:
  • Remission (collects #21-26, tpb, 136 pages, 2012, ISBN 1-6070-6611-4)
  • Brothers (collects #27-31 and 33, tpb, 172 pages, 2013, ISBN 1-6070-6749-8)
  • Empire (collects #32 and 34-38, tpb, 128 pages, 2014, ISBN 1-6070-6858-3)
  • Joining (collects #39-45 and Strikefile #1-2, tpb, 168 pages, 2015, ISBN 1-6321-5254-1)
  • Earth War (collects Earth War #1-6, tpb, 168 pages, 2016, ISBN 1-6321-5836-1)
• Jan's Atomic Heart and Other Stories (104 pages, 2014, ISBN 1-6070-6936-9).
• The Field #1-4 (a, with Ed Brisson, 2014) collected as The Field (tpb, 104 pages, 2014, ISBN 1-6321-5106-5)
• Island #2, 5, 8: "Habitat" (w/a, anthology, 2015–2016) collected as Habitat (tpb, 96 pages, 2016, ISBN 1-6321-5885-X)
• Thought Bubble Anthology #5: "Songs" (a, with Brandon Graham, 2017)
• Protector (Later renamed to First Knife^[3]) (w, with Daniel Bensen and Artyom Trakhanov, 136 pages, 2020, ISBN 9781534316423)

Other publishers

• Jan's Atomic Heart (w/a):
  • Originally a graphic novel from New Reliable Press (48 pages, 2009, ISBN 0-9738-0795-4).
  • Reprinted by Image in Jan's Atomic Heart and Other Stories (104 pages, 2014, ISBN 1-6070-6936-9).
• Heavy Metal vol. 34 #9: "Good Business" (w/a, anthology, Metal Mammoth, 2011)^[4]
• Dark Horse:
  • Dark Horse Presents: "Tiger Lung" (w/a, with Jason Wordie, anthology):
    • "Beneath the Ice" (in vol. 2 #21-23, 2013) collected as Tiger Lung (hc, 88 pages, 2014, ISBN 1-6165-5543-2)
    • "The Guide" (in vol. 3 #6, 2014)
    • Originally an unfinished story called Dead Lands (2010).
  • Halo: Tales from the Slipspace: "Hunting Party" (with J. D. Goff, anthology graphic novel, 128 pages, 2016, ISBN 1-5067-0072-1)
• Think of a City page 43 (w/a, Internet art project, 2015)
• Captain Canuck vol. 2 #5: "Double Star Crossed, Part One" (a, with Ed Brisson, co-feature, Chapter House, 2015)
• 2000 AD #2053: "Judge Dredd: Adaptive Optics" (a, with Arthur Wyatt, anthology, Rebellion, 2017)
• Star Trek: Waypoint #5: "Come Away, Child" (w/a, co-feature, IDW Publishing, 2017)
• Cayrels Ring #1, 3 (a, with Shannon Lentz and various artists, Kickstarter, 2018–2019)

Covers only

• Godzilla: The Half-Century War #5 (IDW Publishing, 2013)
• Sabertooth Swordsman #5 (Dark Horse, 2013)
• Panels for Primates #1 (Monkeybrain, 2013)
• Undertow #1 (Image, 2014)
• Spread #1 (Image, 2014)
• Cluster #1 (Boom! Studios, 2015)
• Ancient Noise #1 (Kickstarter, 2016)
• Robotech #8 (Titan, 2018)
• The Spider King #3 (IDW Publishing, 2018)
• The Season of the Snake #1 (Statix Press, 2018)
• The Gravediggers Union #7 (Image, 2018)

• Vasseur, Richard (July 6, 2009). "Simon Roy: Creator, Writer & Artist of Jan's Atomic Heart". Jazma Online.
• de Valming, Kevin (October 14, 2009). "Profiling Simon Roy of Jan's Atomic Heart". The Fabler. Archived from the original on June 26, 2010.((cite web)): CS1 maint: bot: original URL status unknown (link)
• Harper, David (August 28, 2012). "Artist August: Simon Roy". Multiversity Comics.
• Holder, Lyndsey (December 2, 2012). "Interview: Simon Roy". Innsmouth Free Press.
• Ingram, Ryan (February 26, 2013). "Prophet, Zoology & Ice Age Mysticism with Simon Roy". Comic Book Resources.
• Meylikhov, Matthew (February 18, 2014). "Simon Roy Uncovers Jan's Atomic Heart and Other Stories". Multiversity Comics.
• Ingram, Ryan (March 19, 2014). "Simon Roy's Jan's Atomic Heart Explodes Back to Life". Comic Book Resources.
• Simon, Phillip (December 3, 2014). "Interview with Tiger Lung Writer Simon Roy". Dark Horse.
• Ingram, Ryan (March 25, 2015). "Digging Deep into the Ice Age Shamanism of Tiger Lung with Simon Roy". The Snipe.

• Simon Roy on Blogger
• Simon Roy at the Grand Comics Database
• Simon Roy at the Comic Book DB (archived from the original)
• Simon Roy on DeviantArt