Greek Alphabet Flash Cards – Alpha to Omega, Free to Print

All 24 cards

Alpha to theta 8

Α α alpha: a as in father. In science α names an angle and the alpha particle.
Β β beta: b as in better; in modern Greek, v as in vote. β names the beta particle.
Γ γ gamma: g as in get. γ stands for gamma rays.
Δ δ delta: d as in delete; in modern Greek, th as in then. Δ marks a difference.
Ε ε epsilon: a short e. In math ε stands for a very small positive number.
Ζ ζ zeta: z as in zoo in modern Greek. ζ names the Riemann zeta function.
Η η eta: a long e, as in net; in modern Greek, i as in machine. η stands for efficiency.
Θ θ theta: th as in thin. In geometry θ names an angle.

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Iota to pi 8

Ι ι iota: i as in machine. The small letter is written without a dot.
Κ κ kappa: k as in make. In math κ stands for curvature.
Λ λ lambda: l as in lantern. In physics λ stands for wavelength. Also spelled lamda.
Μ μ mu: m as in music. μ is the prefix micro-, one millionth, and the mean in statistics.
Ν ν nu: n as in net. In physics ν stands for frequency. It is not the letter v.
Ξ ξ xi: x as in fox. Ξ names a particle, the xi baryon.
Ο ο omicron: a short o. The name means small o, as omega means big o.
Π π pi: p as in spot. π is a circle's circumference divided by its diameter.

Rho to omega 8

Ρ ρ rho: a rolled r, as in Spanish carro. In physics ρ stands for density. It is not P.
Σ σ ς sigma: s as in soft. ς is the small form used when it ends a word. Σ is the summation sign.
Τ τ tau: t as in stoke. In physics τ stands for torque.
Υ υ upsilon: in modern Greek, i as in machine. Υ names a particle, the upsilon meson.
Φ φ phi: f as in five in modern Greek. φ stands for the golden ratio.
Χ χ chi: ch as in Scottish loch in modern Greek. χ names the chi-squared distribution. It is not X.
Ψ ψ psi: ps as in lapse. ψ is the wave function in quantum mechanics.
Ω ω omega: a long o. Ω is the ohm, the unit of electrical resistance. It is the last letter.

How this list was compiled: Own work: the lines under each name and the five sets were written for this site. Checked 2026-09-30. The 24 letters, their order, their capital and small forms, the two small forms of sigma, the sound of each letter in ancient and in modern Greek, the spelling lamda, and the names omicron and omega as small o and big o: https://en.wikipedia.org/wiki/Greek_alphabet. Every name and every letter form was also compared with the Unicode character names list, https://www.unicode.org/Public/UCD/latest/ucd/NamesList.txt, which spells lambda as lamda. The use named on each card (α for an angle and the alpha particle, π for a circle's circumference divided by its diameter, Σ for summation, Ω for the ohm and the rest): https://en.wikipedia.org/wiki/Greek_letters_used_in_mathematics,_science,_and_engineering. Licence: own work

How it works

These Greek alphabet flash cards show each capital with its small letter, from Α α to Ω ω. The back gives the name, the sound and one place math or science uses the letter.

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Five sets: three runs of eight, vowels, look-alikes

Show only deals one set. Alpha to theta, Iota to pi and Rho to omega run in order. Vowels holds the seven vowel letters. Look-alikes gathers seven letters that pass for English ones: Η is eta, Ρ is rho and Χ is chi, and small γ, ν, υ and ω are gamma, nu, upsilon and omega.

Print the Greek letter flash cards

Pick a set, turn a card, then press the print button under the card: 12 cards fill a sheet of Letter or A4, so each set takes one sheet and all 24 letters take two. Print double-sided and flip on the long edge; the backs are mirrored, so alpha lands behind Α α.

Sigma has two small forms: σ inside a word and ς at the end of one. The card shows both.
Omicron means small o and omega means big o. The two names were added to tell the letters apart.
Quiz mode marks lamda right for lambda. Lamda is the modern Greek name of the letter.

Questions and answers

How many letters are in the Greek alphabet?

Twenty-four, in this order: alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu, xi, omicron, pi, rho, sigma, tau, upsilon, phi, chi, psi, omega.

Which Greek letters are used in math and science?

Most of them. π is a circle's circumference divided by its diameter, Σ is the summation sign, θ names an angle, Δ marks a difference and μ is the mean. The back of each card names one use.

Do the cards give ancient or modern Greek sounds?

Both where they differ. Beta was b in ancient Greek and is v in modern Greek; delta was d and is now th as in then. Theta, phi and chi are given the modern sounds, the ones usually taught to English speakers.

Greek Alphabet Flash Cards to Flip, Quiz and Print