How to type Greek letters on Mac. [Option + any key].

As long as you press Option while typing, the letters will be converted to the corresponding Greek letters listed below.

Greek letter key

α A A 

β Β B 

γ Γ G 

δ Δ D 

ε Ε E 

ζ Ζ Z 

η Η H 

θ Θ U 

ι Ι I 

κ Κ K 

λ Λ L 

μ Μ M 

ν Ν N 

ξ Ξ J 

ο Ο O 

π Π P 

ρ Ρ R 

σ Σ (medial sigma) S 

? Σ (final sigma) W 

? ? (lunate sigma) option + S 

τ Τ T 

υ Υ Y 

φ Φ F 

χ Χ X 

ψ Ψ C 

ω Ω V