Dingbian County is a county of Yulin, Shaanxi, China.

Coordinates: 37°26′59″N 107°49′44″E / 37.44972°N 107.82889°E / 37.44972; 107.82889

Tian Bu (田布) (785 – February 6, 822), courtesy name Dunli (敦禮), was a general of the Chinese dynasty Tang Dynasty. He was the son of the general Tian Hongzheng, and after Tian Hongzheng's death at the hands of Chengde Circuit (成德, headquartered in modern Shijiazhuang, Hebei) mutineers was put in command of Tian Hongzheng's old command Weibo Circuit (魏博, headquartered in modern Handan, Hebei) to try to avenge Tian Hongzheng. With his own soldiers close to mutiny themselves during the campaign, however, Tian Bu committed suicide.

Tian Bu was born in 785, during the reign of Emperor Dezong. He was the third son of the Weibo Circuit officer Tian Xing, although it is not known whether he was older or younger than his two brothers who were known to history, Tian Qun (田群) and Tian Mou (田牟). When he was young, his father Tian Xing served as the defender of Linqing (臨清, in modern Xingtai, Hebei) under then-military governor (Jiedushi) of Weibo, Tian Ji'an, who was ruling Weibo in a de facto independent manner from the imperial government. It was said that despite Tian Bu's youth, he was able to see that Tian Ji'an's position was not secure and counseled his father to eventually declare loyalty to the imperial government.