Lou Williams' son is now the owner of the best name EVER ... the L.A. Clippers star says he's callin' his newborn baby "Syx" -- and it's all 'cause of his famous NBA awards!!
"I always said if I had a son I was going to give him a unique name," Williams said.
Lou is a 3-time winner of the Association's Sixth Man of the Year honors ... and he confirmed in a postgame interview Thursday night his boy's name is a nod to those trophies.
"Nothing was coming to me, so I just said, 'You know what, I'm going to name him Syx, spell it a little different' and we just had some fun with it.