The origin of the Greek alphabet remains a central topic in historical linguistics and epigraphy, divided broadly into the mainstream consensus and alternative native-origin hypotheses. The prevailing scientific consensus holds that around the 9th to 8th century BCE, Greeks adopted and adapted the West Semitic (Phoenician) consonantal script (abjad). This theory is supported by the identical ordering, physical shapes, and Semitic names of the letter forms (aleph to alpha, bet to beta), alongside the historical account of Herodotus’s that references the phoinikeia grammata. The monumental innovation of the Greeks lay in assigning unused Semitic consonant characters to represent vowels, effectively creating the world’s first complete phonetic alphabet. Conversely, proponents of the autochthonous (or Aegean-continuity) hypothesis argue that the Greek alphabet evolved directly from earlier Aegean scripts, such as Linear A and Linear B, or prehistoric regional traditions. By citing archaeological findings and alternative readings of ancient scholars, this perspective contends that the writing system originated natively or that Phoenicians adapted an existing Aegean script. Alongside these claims, this work will also highlight as distinct cases the Byblos script and the Cypriot influence on the origin of the Greek alphabet.