Greek Alphabet Pronunciation: How to Read All 24 Greek Letters

Greek Alphabet Overview

The Greek alphabet has 24 letters, each with an uppercase and lowercase form. The Greek alphabet influenced the development of the Latin alphabet, which is used to write English today, though the two writing systems developed through different historical paths. This guide focuses on modern Greek pronunciation, since that's what most learners and travelers need.

A few things to keep in mind before diving in:

• Greek is written and read left to right, just like English.
• Some letters combine to create entirely different sounds (called digraphs).
• Stress (which syllable is emphasized) matters and is marked with an accent mark in written Greek.

With that context, here's how each letter sounds.

Greek Alphabet Letters and Pronunciation

Greek Vowels

Greek has seven vowel letters, though several of them sound identical in modern pronunciation.

• Α α (Alpha) – Sounds like "ah," as in "father." Example: άλλο (állo, "other").
• Ε ε (Epsilon) – Sounds like "eh," as in "bet." Example: ένα (éna, "one").
• Η η (Eta) – Sounds like "ee," as in "see." Example: ήλιος (ílios, "sun").
• Ι ι (Iota) – Also sounds like "ee," as in "see." Example: ίδιος (ídios, "same").
• Ο ο (Omicron) – Represents the short /o/ sound, roughly similar to the vowel in "off" for many English speakers. Example: όχι (óchi, "no").
• Υ υ (Upsilon) – Sounds like "ee," similar to Iota and Eta. Example: ύπνος (ýpnos, "sleep").
• Ω ω (Omega) – Represents the same /o/ sound as Omicron in Modern Greek. Example: ώρα (óra, "hour" or "time").

Notice that Eta, Iota, and Upsilon all produce the same "ee" sound in modern Greek, and Omicron and Omega both represent the same /o/ sound. This is one of the biggest surprises for beginners, since in Ancient Greek these letters were pronounced differently.

Beginner tip: Don't rely too heavily on English vowel sounds as an exact match — English doesn't have a perfect equivalent for some Greek vowels. Listening to native speakers alongside this guide will help the sounds feel natural much faster.

Greek Consonants

• Β β (Beta) – Pronounced like the English "v." Example: βιβλίο (vivlío, "book"). Beginner tip: if you see β in a Greek word, don't automatically read it as the English "b" — think of it as the "v" in "very."
• Γ γ (Gamma) – Usually represents a soft, voiced sound produced in the back of the mouth, similar to a Spanish "g." Before ε, αι, η, ι, ει, οι, and υ, it softens into a palatal sound that is only loosely similar to the English "y" — a useful approximation for beginners, but not a true match. Example: γάλα (gála, "milk").
• Δ δ (Delta) – Pronounced like the "th" in "this," not like an English "d." Example: δεν (den, "not").
• Ζ ζ (Zeta) – Sounds like the English "z," as in "zoo." Example: ζωή (zoí, "life").
• Θ θ (Theta) – Pronounced like the "th" in "think," a soft, unvoiced sound. Example: θέλω (thélo, "I want").
• Κ κ (Kappa) – Sounds like the English "k." Example: καλά (kalá, "well" or "good").
• Λ λ (Lambda) – Sounds like the English "l." Example: λάθος (láthos, "mistake").
• Μ μ (Mu) – Sounds like the English "m." Example: μαμά (mamá, "mom").
• Ν ν (Nu) – Sounds like the English "n." Example: ναι (nai, "yes").
• Ξ ξ (Xi) – Pronounced like "ks," as in "box." Example: ξένος (xénos, "foreigner").
• Π π (Pi) – Sounds like the English "p." Example: πόλη (póli, "city").
• Ρ ρ (Rho) – A rolled or tapped "r," similar to Spanish. Example: ρολόι (roloí, "clock").
• Σ σ/ς (Sigma) – Sounds like the English "s." Greek uses a special final form (ς) when the letter appears at the end of a word. Example: σπίτι (spíti, "house").
• Τ τ (Tau) – Sounds like the English "t." Example: τώρα (tóra, "now").
• Φ φ (Phi) – Sounds like the English "f." Example: φίλος (fílos, "friend").
• Χ χ (Chi) – A voiceless fricative sound, similar to the "ch" in the Scottish word "loch." Before certain front vowels, it softens, somewhat like the "h" in "huge." Example: χαρά (chará, "joy").
• Ψ ψ (Psi) – Pronounced like "ps," as in "lapse." Example: ψάρι (psári, "fish").

Full Reference Table

Note: English examples are only approximate. The closest English sound can vary depending on the speaker's accent.

Greek Letter Combinations and Digraphs

Greek also has combinations of letters that create sounds different from what you'd expect by reading each letter individually. These are important because they appear constantly in everyday words.

Greek Vowel Combinations

• αι – Pronounced like "eh," the same as Epsilon.
• ει and οι – Both pronounced like "ee," the same as Iota.
• ου – Pronounced like "oo," as in "moon."
• αυ – Usually pronounced "av" or "af," depending on the following letter.
• ευ – Usually pronounced "ev" or "ef," following the same pattern as αυ.

Greek Consonant Combinations

• μπ – At the start of a word, pronounced like the English "b." In the middle of a word, it can sound like "mb."
• ντ – At the start of a word, pronounced like the English "d." In the middle of a word, it often sounds like "nd."
• γκ – Pronounced like the English "g," as in "go."
• τσ – Pronounced like "ts," as in "cats."
• τζ – Pronounced like "dz," similar to the "j" sound in "jazz."

These combinations are one of the more challenging parts of Greek pronunciation, but recognizing them makes reading Greek words far easier.

Stress Marks in Modern Greek

In Modern Greek, stress is normally marked with an accent over the stressed vowel, such as ά, έ, ή, ί, ό, ύ, and ώ. This mark tells you which syllable to emphasize when speaking. Learning to notice it is important, because placing stress on the wrong syllable can make an otherwise correctly pronounced word hard for a native speaker to recognize.

Common Greek Pronunciation Mistakes

Learners coming from English often make a few predictable errors:

1. Reading Beta as "b" instead of "v." Because the letter looks like the English B, it's tempting to pronounce it the same way.
2. Mixing up Delta and Theta. Both involve a "th" sound, but Delta is voiced (like "this") and Theta is unvoiced (like "think").
3. Ignoring stress accents. Greek words carry a written stress mark, and skipping it can make a word difficult for native speakers to understand.
4. Treating Eta, Iota, and Upsilon as different sounds. In modern Greek, they're pronounced identically, even though they look distinct.

Practicing with audio examples alongside this guide will help reinforce the correct sounds much faster than reading alone.

Modern Greek vs. Ancient Greek Pronunciation

Greek letters are used well beyond the language itself — in mathematics, physics units, and academic fraternity and sorority names. It's worth knowing that Ancient Greek pronunciation differed significantly from the modern version, especially for vowels. Scholars often use reconstructed Ancient Greek pronunciation for academic study, while everyday modern Greek follows the sounds described in this guide. This is also why several Greek vowels that were once distinct all merged into the same "ee" sound over time — a shift known as iotacism.

Frequently Asked Questions About the Greek Alphabet

Is Greek pronunciation the same in Ancient and Modern Greek?

No. Ancient Greek pronunciation differed significantly from the modern version, especially for vowels. Scholars often use reconstructed Ancient Greek pronunciation for academic study, while everyday modern Greek follows the sounds described in this guide.

Why do so many Greek letters sound like "ee"?

This is called iotacism, a historical sound shift where several distinct vowel sounds in Ancient Greek merged into a single "ee" sound over centuries. It's a normal part of the language's evolution.

Is the Greek alphabet hard to learn?

The alphabet itself is manageable, since it only has 24 letters. The main challenges are adjusting to sounds that don't exist in English, like the "th" sounds in Delta and Theta, and getting used to letter combinations like μπ and ντ.

How is Sigma different at the end of a word?

Sigma has two lowercase forms: σ, used anywhere within a word, and ς, used only when the letter appears at the end of a word. Both are pronounced the same way.

Do Greek words have silent letters?

Not exactly, but certain letter combinations change how individual letters sound, which can make pronunciation seem inconsistent until you learn the patterns, such as αυ and ευ shifting to "av/af" and "ev/ef" sounds.

Conclusion

Learning Greek alphabet pronunciation takes practice, but it isn't as intimidating as it first appears. Once you understand which letters share sounds, how vowel and consonant combinations work, and where English assumptions lead you astray, reading and pronouncing Greek words becomes much more intuitive. Repetition, listening to native speakers, and practicing letter combinations regularly will help the sounds become natural over time.