Mujangga (Manchu: ᠮᡠᠵᠠᠩᡤᠠ, Möllendorff: mujangga; Chinese: 穆彰阿; pinyin: Mùzhāng'ā; Wade–Giles: Mu-chang-a; Jyutping: Muk6jeong1aa3; 1782–1856) was a Manchu statesman of the late Qing dynasty, belonging to the Gogiya (郭佳) clan.
In 1805, he was awarded the jinshi degree, the highest level in the imperial examination and quickly rose in the ranks of the Qing government.
He became a member of the Grand Council in 1828 and gradually grew to exercise a decisive influence on the Daoguang Emperor's policies.
As tensions in Sino-British relations rose in 1839, he became one of the chief advocates of a conciliatory policy towards the British and following the outbreak of the First Opium War, he moved to dismiss Lin Zexu from his position as imperial commissioner in September 1840.
Mujangga was the teacher of Zeng Guofan — a young Chinese statesman, Confucian scholar, and future general of the Xiang Army during the Taiping Rebellion who later became a mentor to Li Hongzhang, a future diplomat of the Qing Dynasty and trade minister of the Beiyang Navy.