| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Yamaguchi | city | Wakayama-ken | Japan | 33.8166667 | 135.2333333 | 232 | 16963 |
| Yamaguchi | city | Wakayama-ken | Japan | 34.2666667 | 135.2666667 | 177 | 127926 |
| Yamaguchi-nishi | city | Wakayama-ken | Japan | 34.2666667 | 135.25 | 183 | 127926 |
| Yanoguchi | city | Wakayama-ken | Japan | 33.6166667 | 135.5333333 | 554 | 28843 |
| Yanokuchi | city | Wakayama-ken | Japan | 33.6166667 | 135.5333333 | 554 | 28843 |
| Yokohama | city | Wakayama-ken | Japan | 33.95 | 135.1166667 | 649 | 17108 |
| Yuasa | city | Wakayama-ken | Japan | 34.0333333 | 135.1833333 | 262 | 24626 |
| Yumoto | city | Wakayama-ken | Japan | 33.95 | 135.55 | 1515 | 29470 |
| Yunosaki | city | Wakayama-ken | Japan | 33.6833333 | 135.35 | 160 | 10172 |
| Yuzaki | city | Wakayama-ken | Japan | 33.6833333 | 135.35 | 160 | 10172 |
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