| Girl | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Boy | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Girl | ||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Boy | ||||||||||||
| A | B | C | D | E | F | G | H | I | J | K | L | M |
| N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
| Name | Meaning | Gender | Numerology |
|---|---|---|---|
| Sibeal | Brightness Light | Boy | 3 |
| Sibilini | Name of a Mountain | Boy | 2 |
| Sierra | Black Saw-toothed | Boy | 7 |
| Simon | Listening Intently | Boy | 7 |
| Sinann | Spearhead | Boy | 8 |
| Sinead | Calf Cub Bear | Boy | 7 |
| Sinon | To Hurt Gift from God | Boy | 8 |
| Sioda | Silk | Boy | 3 |
| Siodhachan | Little Peaceful One | Boy | 1 |
| Siodhachan | Little peaceful one | Boy | 1 |
| Siofra | Precocious Child, A Changing | Boy | 5 |
| Siomon | God is Heard Obedient | Boy | 4 |
| Siomonn | God is Heard | Boy | 9 |
| Siomun | God is Heard | Boy | 1 |
| Siothrun | Peace of God | Boy | 7 |
| Siran | Lovely Beautiful | Boy | 7 |
| Siridean | Searcher Peaceful | Boy | 7 |
| Siseal | Grey Eyes Blind | Boy | 2 |
| Sitric | Conqueror | Boy | 6 |
| Sivney | Well Going | Boy | 4 |
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| Skelly | Bard Storyteller | Boy | 3 |
| Slane | Homestead of Fullness | Boy | 6 |
| Slavin | Mountain Man | Boy | 5 |
| Slawin | Man of Mountain | Boy | 6 |
| Slebine | Mountain Man | Boy | 3 |
| Sleibhin | Mountain Man | Boy | 6 |
| Sleven | Man from Mountain | Boy | 5 |
| Slevin | Mountaineer | Boy | 9 |
| Sloan | Warrior, Man of Arms, Fighter | Boy | 7 |
| Sloan | Warrior | Boy | 7 |
| Sloane | Warrior, Man of Arms, Fighter | Boy | 3 |
| Sol | Peaceful, Prayed for | Boy | 1 |
| Solamh | Peace | Boy | 5 |
| Solav | Peace | Boy | 6 |
| Solomon | Man of Peace Peaceful | Boy | 4 |
| Somhairle | Asked of God | Boy | 1 |
| Sorley | Sailor | Boy | 4 |
| Sorley | Viking, Summer Sailor | Boy | 4 |
| Spann | Name for a Quarrelsome | Boy | 1 |
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| Sruthan | Poet | Boy | 2 |
| Standish | From the Stony Park | Boy | 4 |
| Stanislaus | Fame, Glory, Careful, Spike | Boy | 9 |
| Ste | TBD | Boy | 8 |
| Steafan | Man with Crown | Boy | 3 |
| Steefan | Garland Crowned | Boy | 7 |
| Steimhin | Crown | Boy | 7 |
| Stephen | Man with Crown, To Wear a Crown | Boy | 6 |
| Stiabhan | Crown, Garland | Boy | 2 |
| Stiabhna | Crown | Boy | 2 |
| Stiana | Crowned Garland | Boy | 1 |
| Stibhin | Crown Garland | Boy | 9 |
| Stiofan | Garland Crown | Boy | 3 |
| Strachan | Sage Minstrel | Boy | 3 |
| Strahan | Sage, Poet, Minstrel | Boy | 9 |
| Struthers | From the Stream Near the Brook | Boy | 4 |
| Stuart | Steward | Boy | 9 |
| Suave | Smooth | Boy | 5 |
| Suibhne | Well Going Pleasant Friendly | Boy | 6 |
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| Suidhne | Little Hero | Boy | 8 |
| Suileabhain | Small Dark Eye | Boy | 2 |
| Suileabhan | Black Eyed | Boy | 2 |
| Sulaiman | Peaceful Name of a Prophet | Boy | 9 |
| Sullavan | Black Eyed | Boy | 3 |
| Sullevan | Black Eyed | Boy | 7 |
| Sullimn | Black Eyed | Boy | 1 |
| Sullivan | Eyes Like a Hawk, Surname | Boy | 2 |
| Sullivan | Dark eyes | Boy | 2 |
| Sully | Amazing, Handsome, Caring | Boy | 8 |
| Sun | Bending Goodness Decreasing | Boy | 9 |
| Sweeney | Little hero | Boy | 6 |
| Sweeney | Little Hero | Boy | 6 |
| Sweeny | Small Little Hero | Boy | 1 |