| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1061 | Sil | Latin | Of the forest. | M | |
| 1062 | Silas | Latin | Variant of Silvanus: Of the forest. God of trees and forests. In the bible, Silas was a missionary companion of Paul and Timothy. | M | |
| 1063 | Silio | Latin | Of the forest. | M | |
| 1064 | Sill | Latin | Of the forest. | M | |
| 1065 | Silos | Latin | Of the forest. | M | |
| 1066 | Silvain | Latin | Of the forest. | M | |
| 1067 | Silvano | Latin | Variant of Sylvanus referring to the mythological Greek god of trees. A number of saints bore the name. | M | |
| 1068 | Silvanos | Latin | Of the forest. | M | |
| 1069 | Silvanus | Latin | Of the forest. God of trees and forests. | M | |
| 1070 | Silvester | Latin | Of the woods; of the forest. | M | |
| 1071 | Silvius | Latin | Of the forest. | M | |
| 1072 | Sinclair | Latin | Hard working. | M | |
| 1073 | Sinon | Latin | A Trojan soldier. | M | |
| 1074 | Siseal | Latin | Blind. | M | |
| 1075 | Sisyphus | Latin | Son of Aeolus. | M | |
| 1076 | Sixtus | Latin | Bom sixth. | M | |
| 1077 | Sol | Latin | Sun. | M | |
| 1078 | Somnus | Latin | Sleep. | M | |
| 1079 | Spurius | Latin | A hero who saved Rome. | M | |
| 1080 | Stacy | Latin | Dependable. | M | |