Tom O'Neill was an illustrator and graphic artist who worked on West End Games Star Wars: The Roleplaying Game sourcebooks. He served as an art director for Lords of the Expanse and Alien Encounters.
- Alien Encounters
- Classic Campaigns
- Cracken's Threat Dossier
- Creatures of the Galaxy
- The DarkStryder Campaign
- Galaxy Guide 6: Tramp Freighters, Second Edition
- Galaxy Guide 10: Bounty Hunters
- Heroes & Rogues
- Hideouts & Strongholds
- Imperial Double-Cross
- The Jedi Academy Sourcebook
- Platt's Starport Guide
- Pirates & Privateers
- Star Wars Miniatures Battles Companion
- Star Wars: Shadows of the Empire
- Star Wars Adventure Journal 1
- Star Wars Adventure Journal 2
- Star Wars Adventure Journal 4
- Star Wars Adventure Journal 6
- Star Wars Adventure Journal 12
- Star Wars Adventure Journal 13
- Star Wars Adventure Journal 14
- Star Wars: The Roleplaying Game, Second Edition, Revised and Expanded
- Star Wars Trilogy Sourcebook, Special Edition
- Stock Ships
- Tapani Sector Instant Adventures
- The Truce at Bakura Sourcebook
- Wretched Hives of Scum & Villainy