| Seafra | A peaceful and calm sea ruler |
| Seafraid | One who fears the deep ocean |
| Seager | A seeker of the vast sea |
| Seaghda | A majestic and stately person |
| Seaiqa | Thunderbolt. Lightning.; Thunder and lightning |
| Seajol | A joyful spirit of the sea |
| Sealey | From the happy meadow |
| Seamere | Dweller by the sea boundary |
| Seamour | One who loves the open sea |
| Seamus | Form of James supplanter. |
| Sean | Gift from God. Form of John from the French Jean. |
| Seana | God is gracious and merciful |
| Seanachan | A wise and ancient storyteller |
| Seanan | A small, wise, and gracious gift. |
| SEANAN, | A small, wise, and gracious gift. |
| Seanlaoch | A brave and noble ancient warrior. |
| Seanna | Gods generosity. |
| Seanthan | Youthful with Divine Qualities |
| Seara | A bright and glowing morning star. |
| Searbhreathach | One who is a stern, just judge. |
| Searc | Blackbird; Saint |
| Searlait | Feminine form of Charles mannish |
| Searlas | A strong and free man of the land. |
| Searle | An armored and protective soldier. |
| Searlus | A free man of noble, strong spirit. |
| Searria | Searria is a variant of Serena, derived from the Latin word for 'clear' or 'bright'. |
| Season | Sowing, planting |
| Seath | A peaceful and protected dwelling. |
| Seaton | From Sai's estate. |
| Seaver | Fierce stronghold |
| Seaward | One who travels toward the ocean. |
| SEB | myth name (god of the earth) |
| Seba | A drunkard, that turns. |
| SEBAK | myth name (companion of Set) |
| Sebald | Se-bald (Sea Bald) Nickname for Balding Mermen |
| Sebasten | Venerable and highly respected |
| SEBASTENE | One who is greatly honored |
| Sebastian | From Sebaste, A town in Asia minor. |
| SEBASTIANA | feminine form of Sebastiano (revered) |
| Sebastiane | Derived from a revered city |