Xiao Yuanming (蕭淵明) (died 2 June 556), courtesy name Jingtong (靖通), often known by his pre-ascension title of Marquess of Zhenyang (貞陽侯), at times known by his post-removal title Duke of Jian'an (建安公), honored Emperor Min (閔皇帝) by Xiao Zhuang, was briefly an emperor of the Chinese Liang dynasty.
In 555, with Liang in disarray after Western Wei had captured and killed Emperor Yuan, Northern Qi, which had held Xiao Yuanming as an honored captive since 547, forced the general Wang Sengbian to accept Xiao Yuanming as emperor.
Nothing is known about Xiao Yuanming's career as an official until 547, when it was recorded that he was the governor of Yu Province (豫州, modern central Anhui).
In 547, the Eastern Wei general Hou Jing, in conflict with the regent Gao Cheng, surrendered his domain—13 provinces between the Yellow River and the Huai River—to Liang.
Late in 547, the Eastern Wei forces commanded by Murong Shaozong (慕容紹宗) arrived, and instead of engaging the Eastern Wei forces quickly as Yang suggested, Xiao Yuanming became drunk with wine and allowed Murong's army to settle in.
However, the people of the region was impressed by his refusal to pillage them, and gave him the epithet "the righteous prince" (義王, yi wang).
He was taken to the Eastern Wei capital Yecheng (鄴城, in modern Handan, Hebei), where Emperor Xiaojing of Eastern Wei formally received and rebuked him, and then released him, sending him to Gao Cheng's headquarters at Jinyang (晉陽, in modern Taiyuan, Shanxi), where Gao treated him with honor—intending to use Xiao Yuanming as a pawn in negotiations with Liang.
Little is known about Xiao Yuanming's activities while in Eastern Wei and its successor state Northern Qi (as Gao Cheng's successor and brother Gao Yang seized the throne from Emperor Xiaojing in 550 and established Northern Qi as its Emperor Wenxuan), although it was said that Xiao Yuanming cried bitterly when he heard about the fall of Jiankang.
In fall 555, Chen Baxian, displeased with Xiao Yuanming's ascension—which he had tried to persuade Wang Sengbian not to accept—made a surprise attack on Jiankang from his post at Jingkou (京口, in modern Zhenjiang, Jiangsu).
Two days after Wang's death, Xiao Yuanming abdicated and moved out of the palace, returning to his private residence.