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Deng Yang 鄧颺 (d. 249 CE), courtesy name Xuanmao 玄茂, was a high official in the empire of Wei 曹魏 (220-265), one of the Three Kingdoms 三國 (220-280).
He was a descendant of Deng Yu 鄧禹, Minister of Education (situ 司徒) of the early Later Han period 後漢 (25-220 CE). During the reign of Emperor Ming 魏明帝 (r. 226－239 CE) he was made gentleman in the Department of State Affairs (shangshu lang 尚書郎) and then magistrate (ling 令) of Luoyang 洛陽, but was charged with a crime and demoted. Later on he was appointed inner gentleman (zhonglang 中郎) and then section director in the Imperial Secretariat (zhongshu lang 中書郎).
When Cao Fang 曹芳 (r. 239-254) became emperor he was transferred to the post of governor (taishou 太守) of the commandery of Yingchuan 潁川 and then became aide to the General-in-chief (da jiangjun changshi 大將軍長史).
When general Sima Yi 司馬懿 killed the regent Cao Shuang 曹爽 and usurped the power of the empire Deng Yang was executed with the charge of treason. Sima Yi's grandson Sima Yan 炎 (Emperor Wu of the Jin 晉武帝, r. 265-289) would eventually overthrow the Wei and found the Jin dynasty 晉 (265-420).