Kawhi Leonard is suing Nike over his "Klaw" logo ... claiming he drew the symbol himself -- and saying the footwear giant has NO right to copyright it.
It's all in a new lawsuit filed by the Toronto Raptors superstar ... in which he says the famous logo of a "K," an "L" and his jersey number actually came from his own hand, pen and paper back in 2011.
"Leonard traced his notably large hand, and, inside the hand, drew stylized versions of his initials, "KL," and the number that he had worn for much of his career, "2," the lawsuit states.