Nu (hiragana: ぬ, katakana: ヌ) is one of the Japanese kana each representing one mora. Both hiragana and katakana are made in two strokes and represent [nɯ]. They are both derived from the Chinese character 奴. In the Ainu language, katakana ヌ can be written as small ㇴ to represent a final n, and is interchangeable with the standard katakana ン.

In the manga "Bobobo-bo Bo-bobo" ぬ is Jelly Jiggler's favorite character.