Tāw different from Τ
Taw, tav, or taf is the twenty-second and last letter of the Semitic abjads, including Phoenician tāw  , Hebrew tav ת‎, Aramaic taw , Syriac taw ܬ, and Arabic ت tāʾ  (22nd in abjadi order, 3rd in modern order). In Arabic, it also gives rise to the derived letter ث ṯāʾ. Its original sound value is /t/.
The Phoenician letter gave rise to the Greek tau (Τ), Latin T, and Cyrillic Т.