The voiceless bilabial nasal (stop) is a type of consonantal sound, used in some spoken languages.

The symbol in the International Phonetic Alphabet that represents this sound is ⟨m̥⟩, a combination of the letter for the voiced bilabial nasal and a diacritic indicating voicelessness.

The equivalent X-SAMPA symbol is m_0.

Features of the voiceless bilabial nasal: Symbols to the right in a cell are voiced, to the left are voiceless.

Shaded areas denote articulations judged impossible.