Luó Ĕrgang (simplified Chinese: 罗尔纲; traditional Chinese: 羅爾綱) (1901-May 25, 1997) was a historian and Chinese Academy of Social Sciences researcher. Born in Guigang City, Guangxi Province, he was an authority on the Taiping Rebellion from a Left wing viewpoint.
Luo studied history under Professor Hu Shih at Peking University (now Beijing University).
Mao Zedong praised Luo for his research on the Taiping Rebellion.