Kreia is a fictional character and party member in Obsidian Entertainment's Star Wars Knights of the Old Republic II: The Sith Lords. She is a blind Force-sensitive who forms a "bond" with the player character, the Jedi Exile, through the Force. Kreia sets herself up as the Exile's mentor, and rejects the divide of the light and dark side of the Force, as well as the predestination the Force entails. By the game's end, it is revealed she is the Sith Lord Darth Traya and is planning on destroying the Force, and she becomes the final boss of The Sith Lords. Kreia makes no more appearances in Star Wars fiction, though a miniature by Wizards of the Coast was released in August 2008, and she appears as an obtainable character in Star Wars: Galaxy of Heroes.

Written by Chris Avellone, the character was created as a sounding board for the game's theme of the role of the Jedi and the nature of the Force, and was heavily influenced by Planescape: Torment's Ravel Puzzlewell. She served both to test the player and to act as a mouthpiece for any questions Avellone thought should be asked about the Star Wars universe. Sara Kestelman voiced the character, with Kreia's casting being considered the most important of all the characters. Her name references Princess Leia of the original Star Wars trilogy, while her character design draws both on Palpatine's hood and Obi-Wan Kenobi's robes.

She was positively received, and is often pointed as the highlight of The Sith Lords. Praise went to the questions and dialogue she provided, as well as her voice acting. The character has appeared in numerous "top lists", often commending her as a Star Wars character. Attention was drawn to one moment where Kreia lectures about the dangers of charity. Despite this, Avellone felt he failed in creating a "sympathetic" Sith Lord, though he has called her one of his favorite characters in the game.