In Chinese history, a Taishang Huang or Taishang Huangdi is an honorific and institution of a retired emperor. The former emperor had, at least in name, abdicated in favor of someone else. Although no longer the reigning sovereign, there are instances where the retired emperor became a power behind the throne, often exerting more power than the reigning emperor.

Throughout Chinese history, "Emperor" was the superlative title held by the monarchs who ruled various imperial dynasties. In traditional Chinese political theory, the emperor was the "Son of Heaven", an autocrat with the divine mandate right to rule all under Heaven. Emperors were worshiped posthumously under an imperial cult. The lineage of emperors descended from a paternal family line constituted a dynasty, and succession in most cases theoretically followed agnatic primogeniture.