The voiceless alveolo-palatal sibilant fricative is a type of consonantal sound, used in some spoken languages.

The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɕ⟩ ("c", plus the curl also found in its voiced counterpart ⟨ʑ⟩).

It is the sibilant equivalent of the voiceless palatal fricative, and as such it can be transcribed in IPA with ⟨ç˖⟩.

The amount of devoicing is variable, but the fully voiceless variant tends to be alveolo-palatal [ɕ] in the /tj/ sequence: [ˈt̺ʲɕuːzdeɪ]ⓘ.

On the other hand, there is an opposite tendency in Canadian accents that have preserved /tj/, where the sequence tends to merge with the plain /t/ instead: [ˈt̺ʰʉːzdeɪ]ⓘ (see yod-dropping), mirroring General American which does not allow /j/ to follow alveolar consonants in stressed syllables.