Zhang Bangchang (Chinese: 張邦昌; Wade–Giles: Chang Pang-ch'ang; 1081 – 1 November 1127), was a puppet ruler of Da Chu and a prime minister of the Song dynasty.

[4] The Jin hoped a proxy state would be capable of administering Northern China and collecting the annual indemnity without requiring Jurchen interventions to quell Anti-Jin uprisings.

[3] Instead of directly annexing the conquered Song territories,[5] the Jin dynasty formed the buffer state of Chu in 1127.

[1][6][8] Unfortunately, Da Chu did not deter the resistance in Northern China, but the insurgents were motivated by their anger towards the Jurchens' looting rather than by a sense of loyalty towards the inept Song court.

The Da Chu was abolished when Zhang and Empress Dowager Yuanyou agreed to recognize Emperor Gaozong as the new ruler of the revived Southern Song.