1. Jedi Knights: The closest equivalent to knights in Star Wars are the Jedi Knights. They are a warrior-monks order that upholds peace and justice in the galaxy. They are trained in lightsaber combat, the Force, and diplomacy, and embody qualities often associated with knighthood, like honor, courage, and selflessness.
2. Knights of Ren: These are a group of dark side Force users who serve the villainous Kylo Ren in the sequel trilogy. They are more akin to a cult or order of knights serving a tyrannical figure, rather than the heroic knights of legend.
3. Other "Knights": There are a few other instances of the word "knight" used in Star Wars:
* Knights of the Old Republic: This is a popular video game series set thousands of years before the movies. It features a Jedi Knight protagonist and a variety of other knights.
* Knights of the Broken Circle: This is a Sith cult from the Legends continuity.
So, depending on what you are looking for, the "knight" in Star Wars could be a Jedi Knight, a Knight of Ren, or even something else entirely.