| Ysbyty Cynfyn (St. John The Baptist) Churchyard | | | en | 1 |
| Ystrad Mynach (Bethania) Calvinistic Methodist Chapelyard | | | en | 2 |
| Ystalyfera (St. David) Church Burial Ground, Llangiwg | | | en | 3 |
| Ysbyty Ifan Calvinistic Methodist Cemetery | | | en | 1 |
| Yssingeaux, cemetery | | | en | 0 |
| Ystradgynlais New Cemetery | | | en | 1 |
| Ysceifiog (St. Mary) Churchyard | | | en | 3 |
| Ystrad Mynach (Holy Trinity) Churchyard | | | en | 26 |
| Ystradgynlais (St. Cynog) Churchyard | | | en | 9 |