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Greek Alphabet Test

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Greek Alphabet Test

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Small letters 24

α 1st letter. In science: an alpha particle. Also a constellation's brightest star.
β 2nd letter. In science: a beta particle, an electron or positron.
γ 3rd letter. In science: gamma rays.
δ 4th letter. In science: a partial charge in chemistry. It is written δ+ and δ−.
ε 5th letter. In science: a small positive quantity in calculus.
ζ 6th letter. In science: the Riemann zeta function.
η 7th letter. In science: efficiency, and viscosity.
θ 8th letter. In science: an angle in geometry and trigonometry.
ι 9th letter. In science: almost nothing. It looks too much like a Latin i.
κ 10th letter. In science: curvature.
λ 11th letter. In science: wavelength.
μ 12th letter. In science: the prefix micro-, one millionth, as in μm. Also a population mean.
ν 13th letter. In science: frequency in physics.
ξ 14th letter. In science: the extent of a reaction in chemistry.
ο 15th letter. In science: almost nothing. It looks too much like a Latin o.
π 16th letter. In science: a circle's circumference divided by its diameter.
ρ 17th letter. In science: density.
σ 18th letter. In science: standard deviation. At the end of a Greek word it is written ς.
τ 19th letter. In science: torque.
υ 20th letter. In science: almost nothing. It looks too much like a Latin u.
φ 21st letter. In science: the golden ratio, about 1.618.
χ 22nd letter. In science: the chi-squared test in statistics, and electronegativity.
ψ 23rd letter. In science: the wave function in quantum mechanics.
ω 24th letter. In science: angular velocity.

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Capitals 24

Capital Α Capital alpha, the 1st letter. Looks like Latin A, so it is rarely used as a symbol.
Capital Β Capital beta, the 2nd letter. Looks like Latin B, so it is rarely used as a symbol.
Capital Γ Capital gamma, the 3rd letter. Stands for the gamma function, which extends the factorial.
Capital Δ Capital delta, the 4th letter. Stands for a change or difference, as in Δt.
Capital Ε Capital epsilon, the 5th letter. Looks like Latin E, so it is rarely used as a symbol.
Capital Ζ Capital zeta, the 6th letter. Looks like Latin Z, so it is rarely used as a symbol.
Capital Η Capital eta, the 7th letter. Looks like Latin H, so it is rarely used as a symbol.
Capital Θ Capital theta, the 8th letter. Used in computer science for a tight bound, next to big O.
Capital Ι Capital iota, the 9th letter. Looks like Latin I, so it is rarely used as a symbol.
Capital Κ Capital kappa, the 10th letter. Looks like Latin K, so it is rarely used as a symbol.
Capital Λ Capital lambda, the 11th letter. Stands for the cosmological constant.
Capital Μ Capital mu, the 12th letter. Looks like Latin M, so it is rarely used as a symbol.
Capital Ν Capital nu, the 13th letter. Looks like Latin N, so it is rarely used as a symbol.
Capital Ξ Capital xi, the 14th letter. Stands for Riemann's xi function.
Capital Ο Capital omicron, the 15th letter. Looks like Latin O, so it is rarely used as a symbol.
Capital Π Capital pi, the 16th letter. Stands for a product, the multiplying cousin of capital sigma.
Capital Ρ Capital rho, the 17th letter. Looks like Latin P, so it is rarely used as a symbol.
Capital Σ Capital sigma, the 18th letter. Stands for a sum of terms.
Capital Τ Capital tau, the 19th letter. Looks like Latin T, so it is rarely used as a symbol.
Capital Υ Capital upsilon, the 20th letter. Looks like Latin Y, so it is rarely used as a symbol.
Capital Φ Capital phi, the 21st letter. Stands for magnetic or electric flux.
Capital Χ Capital chi, the 22nd letter. Looks like Latin X, so it is rarely used as a symbol.
Capital Ψ Capital psi, the 23rd letter. A symbol for psychology.
Capital Ω Capital omega, the 24th letter. Stands for the ohm, the unit of electrical resistance.

What comes next 23

Which letter comes after alpha? Beta (Β β) is the 2nd letter.
Which letter comes after beta? Gamma (Γ γ) is the 3rd letter.
Which letter comes after chi? Psi (Ψ ψ) is the 23rd letter.
Which letter comes after delta? Epsilon (Ε ε) is the 5th letter.
Which letter comes after epsilon? Zeta (Ζ ζ) is the 6th letter.
Which letter comes after eta? Theta (Θ θ) is the 8th letter.
Which letter comes after gamma? Delta (Δ δ) is the 4th letter.
Which letter comes after iota? Kappa (Κ κ) is the 10th letter.
Which letter comes after kappa? Lambda (Λ λ) is the 11th letter.
Which letter comes after lambda? Mu (Μ μ) is the 12th letter.
Which letter comes after mu? Nu (Ν ν) is the 13th letter.
Which letter comes after nu? Xi (Ξ ξ) is the 14th letter.
Which letter comes after omicron? Pi (Π π) is the 16th letter.
Which letter comes after phi? Chi (Χ χ) is the 22nd letter.
Which letter comes after pi? Rho (Ρ ρ) is the 17th letter.
Which letter comes after psi? Omega (Ω ω) is the 24th letter.
Which letter comes after rho? Sigma (Σ σ) is the 18th letter.
Which letter comes after sigma? Tau (Τ τ) is the 19th letter.
Which letter comes after tau? Upsilon (Υ υ) is the 20th letter.
Which letter comes after theta? Iota (Ι ι) is the 9th letter.
Which letter comes after upsilon? Phi (Φ φ) is the 21st letter.
Which letter comes after xi? Omicron (Ο ο) is the 15th letter.
Which letter comes after zeta? Eta (Η η) is the 7th letter.

How this list was compiled: The 24 letters of the standard Greek alphabet, their order, capital and small forms and English names, as given by Wikipedia's Greek alphabet article; the science line on each card is taken from Wikipedia's list of Greek letters used in mathematics, science and engineering. Both read 2026-09-23. Card wording is own work. Licence: own work

How it works

This Greek alphabet test shows one letter at a time and you type its name. The deck has all 24 small letters, the 24 capitals and a round on the order from alpha to omega.

Read the full guide

Three sets

Small letters and Capitals each hold all 24. What comes next asks which letter follows another, for the order. The back of each card gives the letter's place and where you meet it in maths or science, such as λ for wavelength.

Flip, type or race

Quiz marks the name you type; common spellings such as ksi and fi count. Flip turns the card to show the answer. Timed counts how many you name in a minute. Print cards gives a double-sided deck to cut out.

Learn the look-alikes first: ν is nu, not v; ρ is rho, not p; η is eta, not n.
Ten capitals, such as Γ, Δ, Λ and Ω, look like no Latin letter, so they are the ones to practise.

Questions and answers

How many letters are in the Greek alphabet?

Twenty-four, from alpha to omega. Sigma has a second small form, ς, used only at the end of a word; the test asks for σ and names ς on the back of the card.

What is the order of the Greek alphabet?

Alpha, beta, gamma, delta, epsilon, zeta, eta, theta, iota, kappa, lambda, mu, nu, xi, omicron, pi, rho, sigma, tau, upsilon, phi, chi, psi, omega. The What comes next set drills it.

Is this for learning Greek or for maths and science?

Both start with the same names. The cards teach the letters as symbols, the way a maths, physics, chemistry or statistics class uses them. They do not teach pronunciation or Greek words.