The Roman alphabet, also called the Latin alphabet, traces back roughly 3,800 years to a simple writing system invented by Semitic-speaking workers in Egyptian mines. From that desert script, the alphabet passed through Phoenician and Greek hands before the Etruscans carried it into Italy, where the Romans shaped it into the 23-letter system that eventually became the 26-letter alphabet you’re reading right now.
It Started in the Sinai Desert
The oldest ancestor of every letter on this page is a script now called Proto-Sinaitic. First discovered in 1904 at the mining site of Serabit el-Khadim in the Sinai Peninsula, these inscriptions date to the first half of the second millennium BCE. They were carved by Semitic laborers working in Egyptian turquoise mines, people surrounded by Egyptian hieroglyphics but who created something radically different: one simple sound for one simple symbol, with only 22 symbols total.
That was the revolution. Egyptian hieroglyphics and Mesopotamian cuneiform required hundreds of signs, and only trained scribes could read them. Proto-Sinaitic stripped writing down to its core, making literacy accessible to ordinary people. Each symbol started as a tiny picture representing a word whose first sound became the letter’s value. The symbol for “house” (called “bet” in Semitic languages) became the letter B. The symbol for “water” (“mem”) became M. This trick, using a picture to represent just its opening sound, is the single invention that makes alphabetic writing possible.
From Phoenician Traders to Greek Vowels
By around 1050 BCE, the Phoenicians, a seafaring people based in what is now Lebanon, were using a refined 22-letter alphabet descended from Proto-Sinaitic. The Phoenician, Hebrew, and Canaanite scripts of this period are virtually indistinguishable from one another, and scholars sometimes treat them as regional variants of the same writing system.
Phoenician merchants carried their alphabet across the Mediterranean, and sometime around the 8th century BCE, the Greeks adopted it. But Greek had sounds that Phoenician didn’t, particularly vowels. Semitic alphabets like Phoenician wrote only consonants, leaving readers to fill in the vowels from context. Greek speakers repurposed several Phoenician consonant letters that represented sounds Greek didn’t need and turned them into dedicated vowel signs. The Phoenician letter “aleph” (a glottal stop) became alpha (A). “He” became epsilon (E). This addition of true vowel letters was the Greeks’ major contribution to alphabetic history, and every European alphabet since has included them.
The Etruscan Bridge to Rome
The alphabet didn’t jump directly from Greece to Rome. It passed through the Etruscans first. The Etruscans dominated central Italy before the Romans rose to power, and they had adopted a western Greek alphabet from Greek colonists in southern Italy. The Romans, who were culturally influenced by the Etruscans in their early centuries, took the Etruscan version of the Greek alphabet and adapted it to write Latin.
Of the 23 letters in the Classical Latin alphabet, 21 were derived from the Etruscan alphabet. The Romans dropped letters for sounds Latin didn’t use and adjusted others to fit their own pronunciation. The letter C, for instance, originally covered both the “g” and “k” sounds in early Latin. Eventually, the Romans added a small bar to C to create the letter G, giving each sound its own symbol.
The Classical Latin Alphabet Had 23 Letters
By the 1st century BCE, during the height of the Roman Republic, the standard Latin alphabet had settled at 23 letters. It included A, B, C, D, E, F, G, H, I, K, L, M, N, O, P, Q, R, S, T, V, X, Y, and Z. There was no J, no U, and no W.
The last two letters, Y and Z, were latecomers. After Rome conquered Greece in the 1st century BCE, Latin borrowed a flood of Greek words. Y and Z were adopted from the contemporary Greek alphabet specifically to spell those borrowed terms. Because they were add-ons rather than original members, the Romans placed them at the very end of the alphabet, which is why they still sit there today. In everyday Latin inscriptions, Y and Z barely appeared at all.
How Stone Carving Shaped the Letters
The letter shapes you recognize as capital letters come from a Roman style called square capitals, developed during the Roman Empire for monument inscriptions. These are the letters you see on Trajan’s Column and other Roman stonework: sharp, straight lines with alternating thick and thin strokes, carved with a chisel at precise angles. The tools and materials of Roman stonemasons gave the letters their distinctive serifs (the small feet at the ends of strokes), which helped carvers finish each line cleanly in stone.
Square capitals continue to be the basis for modern uppercase letters. When you look at the letters carved into a government building or printed in a serif font, you’re seeing forms that Roman stonecutters established two thousand years ago.
The oldest known Latin inscription, found on a stone called the Lapis Niger in the Roman Forum, dates to roughly 575 to 510 BCE. Discovered in 1899, it features archaic Latin that is difficult to read even for scholars, with letter forms that still show strong Etruscan influence. It provides a snapshot of what Roman writing looked like before the alphabet fully matured into its classical form.
How 23 Letters Became 26
The jump from the Roman 23 to the modern 26 happened slowly, over more than a thousand years. In Classical Latin, the letter I served double duty as both a vowel (as in our “ee” sound) and a consonant (as in our “y” sound). Similarly, V represented both a vowel (like our “oo”) and a consonant (like our “w”). Context told the reader which was which.
During the late medieval period, scribes began distinguishing between these sounds by writing them differently. The consonant form of I gradually became J, and the vowel form of V became U, with V reserved for the consonant. But the split was painfully slow. J and U were not consistently treated as separate letters in English until the 18th century, which is why older texts and building inscriptions sometimes read IVLIVS instead of JULIUS.
W has a different origin entirely. English and other Germanic languages had a “w” sound that Latin lacked. Scribes initially wrote it as a doubled U (UU) or doubled V (VV), which is why the letter is literally called “double-u.” Over time, the digraph fused into a single character. W never entered many other European languages that use the Latin alphabet, such as Italian or Spanish, where it appears only in borrowed foreign words.
With J, U, and W established as independent letters, the alphabet reached its current 26. The basic shape of each letter, though, still carries the DNA of those 22 symbols scratched into rock by miners in the Sinai nearly four millennia ago.