Emperor Wu of Liang, personal name Xiao Yan (蕭衍), courtesy name Shuda (叔達), childhood name Lian'er (練兒), was the founding emperor of the Chinese Liang dynasty, during the Northern and Southern dynasties period. His reign, until its end, was one of the most stable and prosperous among the Southern dynasties. He came from the same Xiao clan of Lanling (蘭陵蕭氏) that ruled the preceding Southern Qi dynasty, but from a different branch.

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.