贾餗
Wang Ya (; died December 17, 835), courtesy name Guangjin (), formally Duke of Dai (), was an official of the Chinese Tang dynasty, serving as a chancellor during the reigns of Emperor Xianzong and Emperor Xianzong's grandson Emperor Wenzong. During Emperor Wenzong's reign, he became involved in a major power struggle between imperial officials and eunuchs known as the Ganlu Incident, and he was killed by the eunuchs along with three other chancellors, Li Xun, Jia Su, and Shu Yuanyu.