Greek alphabet  



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Use in other languages  
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Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities. Those Greek letters which have the same form as Latin letters are rarely used: capital A, B, E, Z, H, I, K, M, N, O, P, T, Y, X. Small ι, ο and υ are also rarely used, since they closely resemble the Latin letters i, o and u. Sometimes, font variants of Greek letters are used as distinct symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used.
The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet before switching to Latin letters.
In mathematical finance, the Greeks are the variables denoted by Greek letters used to describe the risk of certain investments.
Some common conventions:
The Greek letter forms used in mathematics are often different from those used in Greeklanguage text: they are designed to be used in isolation, not connected to other letters, and some use variant forms which are not normally used in current Greek typography.
The OpenType font format has the feature tag "mgrk" ("Mathematical Greek") to identify a glyph as representing a Greek letter to be used in mathematical (as opposed to Greek language) contexts.
The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style. This is in line with the convention that variables should be italicized. As Greek letters are more often than not used as variables in mathematical formulas, a Greek letter appearing similar to the TeX rendering is more likely to be encountered in works involving mathematics.
Name  TeX  HTML 

Alpha  Α α  
Beta  Β β  
Gamma  Γ γ  
Delta  Δ δ  
Epsilon  Ε ϵ ε  
Digamma  Ϝ ϝ  
Zeta  Ζ ζ  
Eta  Η η  
Theta  Θ θ ϑ  
Iota  Ι ι  
Kappa  Κ κ ϰ  
Lambda  Λ λ  
Mu  Μ μ 
Name  TeX  HTML 

Nu  Ν ν  
Xi  Ξ ξ  
Omicron  Ο ο  
Pi  Π π ϖ  
Rho  Ρ ρ ϱ  
Sigma  Σ σ ς  
Tau  Τ τ  
Upsilon  Υ υ  
Phi  Φ ϕ φ  
Chi  Χ χ  
Psi  Ψ ψ  
Omega  Ω ω 
Name  Greek Letter  Bold  Italic  Bold Italic  SansSerif Bold  SansSerif Bold Italic  APL  Double struck bold  Unicode variants or similar 

Alpha  Α α  𝚨 𝛂  𝛢 𝛼  𝜜 𝜶  𝝖 𝝰  𝞐 𝞪  ⍺ ⍶  
Beta  Β β ϐ ᵝ ᵦ  𝚩 𝛃  𝛣 𝛽  𝜝 𝜷  𝝗 𝝱  𝞑 𝞫  
Gamma  Γ γ ᴦ ᵞ ᵧ  𝚪 𝛄  𝛤 𝛾  𝜞 𝜸  𝝘 𝝲  𝞒 𝞬  ℾ ℽ  
Delta  Δ δ ᵟ  𝚫 𝛅  𝛥 𝛿  𝜟 𝜹  𝝙 𝝳  𝞓 𝞭  U+2206 ∆ INCREMENT, U+2207 ∇ NABLA  
Epsilon  Ε ε ϵ ϶  𝚬 𝛆 𝛜  𝛦 𝜀 𝜖  𝜠 𝜺 𝝐  𝝚 𝝴 𝞊  𝞔 𝞮 𝟄  ⍷  U+2208 ∈ ELEMENT OF–U+220D ∍ SMALL CONTAINS AS MEMBER  
Zeta  Ζ ζ  𝚭 𝛇  𝛧 𝜁  𝜡 𝜻  𝝛 𝝵  𝞕 𝞯  
Eta  Η η Ͱ ͱ  𝚮 𝛈  𝛨 𝜂  𝜢 𝜼  𝝜 𝝶  𝞖 𝞰  
Theta  Θ θ ϑ ϴ ᶿ  𝚯 𝛉 𝚹 𝛝  𝛩 𝜃 𝛳 𝜗  𝜣 𝜽 𝜭 𝝑  𝝝 𝝷 𝚹 𝞋  𝞗 𝞱 𝜭 𝟅  
Iota  Ι ι ᶥ ℩  𝚰 𝛊  𝛪 𝜄  𝜤 𝜾  𝝞 𝝸  𝞘 𝞲  ⍳ ⍸  
Kappa  Κ κ ϰ  𝚱 𝛋 𝛞  𝛫 𝜅 𝜘  𝜥 𝜿 𝝒  𝝟 𝝹 𝞌  𝞙 𝞳 𝟆  
Lambda  Λ λ ᴧ  𝚲 𝛌  𝛬 𝜆  𝜦 𝝀  𝝠 𝝺  𝞚 𝞴  
Mu  Μ μ µ  𝚳 𝛍  𝛭 𝜇  𝜧 𝝁  𝝡 𝝻  𝞛 𝞵  
Nu  Ν ν  𝚴 𝛎  𝛮 𝜈  𝜨 𝝂  𝝢 𝝼  𝞜 𝞶  
Xi  Ξ ξ  𝚵 𝛏  𝛯 𝜉  𝜩 𝝃  𝝣 𝝽  𝞝 𝞷  
Omicron  Ο ο  𝚶 𝛐  𝛰 𝜊  𝜪 𝝄  𝝤 𝝾  𝞞 𝞸  
Pi  Π π ϖ ᴨ  𝚷 𝛑 𝛡  𝛱 𝜋 𝜛  𝜫 𝝅 𝝕  𝝥 𝝿 𝞏  𝞟 𝞹 𝟉  ℿ ℼ  U+220F ∏ NARY PRODUCT, U+2210 ∐ NARY COPRODUCT  
Rho  Ρ ρ Ῥ ῥ ῤ ϱ ϼ ᴩ ᵨ ☧  𝚸 𝛒 𝛠  𝛲 𝜌 𝜚  𝜬 𝝆 𝝔  𝝦 𝞀 𝞎  𝞠 𝞺 𝟈  ⍴  
Sigma  Σ σ ς Ϲ ϲ Ͻ ͻ Ͼ ͼ Ͽ ͽ  𝚺 𝛔 𝛓  𝛴 𝜎 𝜍  𝜮 𝝈 𝝇  𝝨 𝞂 𝞁  𝞢 𝞼 𝞻  ⅀  U+2211 ∑ NARY SUMMATION  
Tau  Τ τ  𝚻 𝛕  𝛵 𝜏  𝜯 𝝉  𝝩 𝞃  𝞣 𝞽  
Upsilon  Υ υ ϒ  𝚼 𝛖  𝛶 𝜐  𝜰 𝝊  𝝪 𝞄  𝞤 𝞾  
Phi  Φ φ ϕ  𝚽 𝛗 𝛟  𝛷 𝜑 𝜙  𝜱 𝝋 𝝓  𝝫 𝞅 𝞍  𝞥 𝞿 𝟇  
Chi  Χ χᵡᵪ☧  𝚾 𝛘  𝛸 𝜒  𝜲 𝝌  𝝬 𝞆  𝞦 𝟀  
Psi  Ψ ψ ᴪ  𝚿 𝛙  𝛹 𝜓  𝜳 𝝍  𝝭 𝞇  𝞧 𝟁  
Omega  Ω ω ꭥ  𝛀 𝛚  𝛺 𝜔  𝜴 𝝎  𝝮 𝞈  𝞨 𝟂  ⍵ ⍹  U+2126 Ω OHM SIGN, U+2127 ℧ INVERTED OHM SIGN 
See also: Alpha (disambiguation) 
See also: Beta (disambiguation) 
See also: Gamma (disambiguation) 
See also: Delta (disambiguation) 
See also: Epsilon (disambiguation) 
See also: Digamma 
See also: Zeta (disambiguation) 
See also: Eta (disambiguation) 
See also: Theta (disambiguation) 
See also: Iota (disambiguation) 
See also: Kappa (disambiguation) 
See also: Lambda (disambiguation) 
See also: Mu (disambiguation) 
See also: Nu (disambiguation) 
See also: Xi (disambiguation) 
See also: Omicron (disambiguation) 
See also: Pi (disambiguation) 
See also: Rho (disambiguation) 
See also: Sigma (disambiguation) 
See also: Tau (disambiguation) 
See also: Upsilon (disambiguation) 
See also: Phi (disambiguation) 
Note: The empty set symbol ∅ looks similar, but is unrelated to the Greek letter.
See also: Chi (disambiguation) 
See also: Psi (disambiguation) 
See also: Omega (disambiguation) 