The voiceless velar fricative is a type of consonantal sound used in some spoken languages.

The symbol in the International Phonetic Alphabet that represents this sound is ⟨x⟩, the Latin letter x.

It is also used in broad transcription instead of the symbol ⟨χ⟩, the Greek chi, for the voiceless uvular fricative.

Some scholars also posit the voiceless velar approximant distinct from the fricative, used in some spoken languages.

The velar approximant can in many cases be considered the semivocalic equivalent of the voiceless variant of the close back unrounded vowel ⟨ɯ̊⟩.