| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1021 | Ruarc | Irish | Famous ruler. | M | |
| 1022 | Ruark | Irish | Famous ruler. | M | |
| 1023 | Ryan | Irish | Kingly. Famous Bearer: American actor Ryan O'Neal. | M | |
| 1024 | Rye | Irish | Island meadow. | M | |
| 1025 | Ryen | Irish | Kingly. | M | |
| 1026 | Rylan | Irish | Island meadow. | M | |
| 1027 | Ryland | Irish | Island meadow. | M | |
| 1028 | Ryleigh | Irish | Island meadow. | M | |
| 1029 | Ryley | Irish | Island meadow. | M | |
| 1030 | Ryon | Irish | Kingly. | M | |
| 1031 | Scanlan | Irish | Scandal. | M | |
| 1032 | Scanlon | Irish | Scandal. | M | |
| 1033 | Scannalan | Irish | Scandal. | M | |
| 1034 | Scolaighe | Irish | Herald. | M | |
| 1035 | Scully | Irish | Herald. | M | |
| 1036 | Seafra | Irish | Peace from God. | M | |
| 1037 | Seafraid | Irish | Peace from God. | M | |
| 1038 | Seaghda | Irish | Majestic. | M | |
| 1039 | Seamus | Irish | Variant of Shamus (Irish variant of James: supplanter). | M | |
| 1040 | Sean | Irish | Irish variant of John: God is gracious; gift from God. | M | |