The Star Wars Rules Companion is a paperback supplement to Star Wars: The Roleplaying Game published by West End Games. It was written by Greg Gorden and published in January 1989.

Publisher's summary

Expand your Star Wars campaign with this new roleplaying game supplement! The Star Wars Rules Companion incorporates the important changes and clarifications from The Star Wars Rules Upgrade, as well as new options suggested by you, the players, to create an even more exciting roleplaying experience.

The best roleplaying game of the year is now even better! These new and expanded rules increase the scope of the galaxy, clarify nagging questions, and further enhance the movie-like spirit of Star Wars: The Roleplaying Game.