| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sead | - | Bosnian | ||
| SebastiÁN | se-bah-STYAHN | Spanish | ||
| Sebastian | ze-BAHS-tee-ahn (German), sə-BAS-chən (English), se-BAHS-tyahn (Polish), SE-bahs-tee-ahn (Finnish) | German, English, Swedish, Norwegian, Danish, Polish, Finnish, Romanian | ||
| Sebastiana | - | Italian | ||
| Sebastiano | - | Italian | ||
| Sebastianus | - | Late Roman | ||
| Sebastijan | - | Slovene, Croatian | ||
| SebestyÉN | - | Hungarian | ||
| Seble | - | Eastern African, Amharic | ||
| Secundinus | - | Ancient Roman | ||
| Secundus | - | Ancient Roman | ||
| Seema | - | Indian, Hindi, Marathi | ||
| Seeta | - | Indian, Hindi | ||
| Sefu | - | Eastern African, Swahili | ||
| Seisyll | - | Ancient Celtic |