软颚鼻音是辅音的一种，中文俗称后鼻音，在国际音标中以⟨ŋ⟩表示，在X-SAMPA中以⟨N⟩表示。普通话的ang、eng、ing、ong的韵尾就是此音。

• 发音方法是闭塞，也就是说通过阻碍空气在声腔流动来发音。
• 发音部位是软颚，即以舌根部位抵住软颚。软颚位于硬颚后面，近喉咙的一片柔软组织。
• 发音类型是浊音，即发音时声带会颤动。
• 本辅音是鼻音，发音时空气会从鼻逸出。
• 中央辅音，气流可从舌中部流过，不从两侧流过。
• 气流特点是从肺部直接流出，而不是从口腔或喉门流出。

The velar nasal is a type of consonantal sound, used in some spoken languages. It is the sound of ng in English sing. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ŋ⟩, and the equivalent X-SAMPA symbol is N. The IPA symbol ⟨ŋ⟩ is similar to ⟨ɳ⟩, the symbol for the retroflex nasal, which has a rightward-pointing hook extending from the bottom of the right stem, and to ⟨ɲ⟩, the symbol for the palatal nasal, which has a leftward-pointing hook extending from the bottom of the left stem. Both the IPA symbol and the sound are commonly called 'eng' or 'engma'.