| • Science | • People | • Locations | • Timeline |
| Greek alphabet | |
| Alpha | Beta |
| Gamma | Delta |
| Epsilon | Digamma |
| Zeta | Eta |
| Theta | Iota |
| Kappa | Lambda |
| Mu | Nu |
| Xi | Omicron |
| Pi | San |
| Qoppa | Rho |
| Sigma | Tau |
| Upsilon | Phi |
| Chi | Psi |
| Omega | Sampi |
Qoppa is an obsolete letter of the Greek alphabet and has a numeric value of 90. There are two very different glyphs for qoppa: "archaic Qoppa" (Ϙ ϙ) used to write words and "Numeric Qoppa" (Ϟ ϟ) used in modern Greek legal documentation.