| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Yíanni Khorió | city | Nomos )) (( Piraios | Greece | 36.7833333 | 22.4833333 | 118 | 3131 |
| Yídhais | city | Nomos )) (( Piraios | Greece | 37.9 | 24.7833333 | 1102 | 3429 |
| Yídhes | city | Nomos )) (( Piraios | Greece | 38.55 | 23.7833333 | 662 | 6035 |
| Yídhes | city | Nomos )) (( Piraios | Greece | 37.9 | 24.7833333 | 1102 | 3429 |
| Yílofos | city | Nomos Grevenon | Greece | 39.8505556 | 21.7886111 | 3431 | 2671 |
| Yíri | city | Nomos )) (( Piraios | Greece | 37.8 | 20.7333333 | 1784 | 8816 |
| Yírion | city | Nomos )) (( Piraios | Greece | 37.8 | 20.7333333 | 1784 | 8816 |
| Yíros | city | Nomos )) (( Piraios | Greece | 35.2166667 | 24.0833333 | 2135 | 5369 |
| Yíros | city | Nomos )) (( Piraios | Greece | 41.2 | 24.3333333 | 1036 | 2979 |
| Yíthio | city | Nomos Lakonias | Greece | 36.755 | 22.5641667 | 3 | 2029 |
| Yíthion | city | Nomos Lakonias | Greece | 36.755 | 22.5641667 | 3 | 2029 |
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