Ṯāʼ (ﺙ) is one of the six letters the Arabic alphabet aded to the twenty-two inherited from the Phoenician alphabet (the others being ḫāʼ, ḏāl, ḍād, ẓāʼ, ġayn). It represents the voiceless dental fricative (IPA: [θ]). In name and shape, it is a variant of tāʼ.