| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 221 | Penarddun | Welsh | Legendary daughter of Beli. | F | |
| 222 | Rathtyen | Welsh | Legendary daughter of Clememyl. | F | |
| 223 | Rhan | Welsh | Fate. | F | |
| 224 | Rhawn | Welsh | Coarse long hair. | F | |
| 225 | Rhedyn | Welsh | Fern. | F | |
| 226 | Rhiain | Welsh | Maiden. | F | |
| 227 | Rhiannon | Welsh | Nymph; goddess; pure maiden. | F | |
| 228 | Rhianwen | Welsh | Comely maiden. | F | |
| 229 | Rhianwyn | Welsh | Comely maiden. | F | |
| 230 | Rhona | Welsh | Variant of Rhonwen: Fair lance; fair, slender. Welsh form of Rowena: white-haired. | F | |
| 231 | Rhonwen | Welsh | Fair lance; fair, slender. Welsh form of Rowena: white-haired. | F | |
| 232 | Rhosyn | Welsh | Rose. | F | |
| 233 | Rowena | Welsh | Variant of Rhonwen: Fair lance; fair, slender. Welsh form of Rowena: white-haired. | F | |
| 234 | Saeth | Welsh | Arrow. | F | |
| 235 | Saffir | Welsh | Sapphire. | F | |
| 236 | Sarff | Welsh | Snake. | F | |
| 237 | Seren | Welsh | Star. | F | |
| 238 | Sian | Welsh | Welsh form of Jane: God is gracious. God's gift. | F | |
| 239 | Sioned | Welsh | Welsh form of Jane: God is gracious. God's gift. | F | |
| 240 | Talaith | Welsh | Diadem. | F | |