| Stefani | | STEF-ə-nee | English | |
| Stefania | | ste-FAH-nyah (Italian), ste-FAHN-yah (Polish) | Italian, Polish | |
| Stefanie | | SHTE-fah-nee (German), STAY-fah-nee (Dutch) | German, Dutch, Danish | |
| Stefanu | | - | Old Church Slavic | |
| Stefcia | | STEF-chah | Polish | |
| Stefek | | - | Polish | |
| Steffan | | - | Welsh | |
| Steffen | | SHTE-fen (Low German) | Low German, Danish, Norwegian, Dutch | |
| Steinarr | | - | Ancient Scandinavian | |
| Steinn | | - | Ancient Scandinavian | |
| Stelara | | ste-LAH-rah | Esperanto | |
| Stella (1) | | STEL-ə (English) | English, Italian, Dutch, German | |
| Stellan | | - | Swedish | |
| Sten | | - | Swedish, Danish, Norwegian, Dutch | |
| Stepan | | stye-PAHN (Russian), stee-PAHN (Russian) | Russian, Armenian | |