Onimi is a fictional character from the Star Wars universe.

While Onimi seemed weak, with his torso twisted, with short limbs and small hands, his worst feature was his wretched face. Despite his dimunitive and pitiful appearance, he possessed a connection to the Force that has been lost to other Yuuzhan Vong for many thousand of years. This gave him the power to manipulate the minds of others.

His most deadly weapon was his ability to produce toxins lethal to all who were infected by them. Under the guise of court jester to Supreme Overlord Shimrra, he secretly controlled the Overlord and, consequently, the entire Yuuzhan Vong. His identity as the mastermind of the invading race was revealed towards the end of the book The Unifying Force, when Luke Skywalker and Jacen Solo penetrated the Supreme Overlord's chambers in an effort to quickly end the war.

He was killed by Jacen Solo, cementing the Jedi's place as one of the strongest of the New Jedi Order.