| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Yachimata | city | Chiba-ken | Japan | 35.65 | 140.3166667 | 144 | 139815 |
| Yahata | city | Chiba-ken | Japan | 35.25 | 139.8666667 | 0 | 71582 |
| Yakiri | city | Chiba-ken | Japan | 35.7563889 | 139.9013889 | 65 | 406641 |
| Yamakura | city | Chiba-ken | Japan | 35.7833333 | 140.5333333 | 131 | 139595 |
| Yawata | city | Chiba-ken | Japan | 35.25 | 139.8666667 | 0 | 71582 |
| Yawata | city | Chiba-ken | Japan | 35.5333333 | 140.1166667 | 45 | 112428 |
| Yawato | city | Chiba-ken | Japan | 35.5333333 | 140.1166667 | 45 | 112428 |
| Yokaichiba | city | Chiba-ken | Japan | 35.7 | 140.55 | 52 | 130333 |
| Yokoshiba | city | Chiba-ken | Japan | 35.65 | 140.4833333 | 36 | 137061 |
| Yokota | city | Chiba-ken | Japan | 35.3833333 | 140.0166667 | 49 | 138693 |
| Yoshida | city | Chiba-ken | Japan | 35.7166667 | 140.5 | 65 | 139668 |
| Yotsukaido | city | Chiba-ken | Japan | 35.65 | 140.1666667 | 65 | 139815 |
| Yotsukaidō | city | Chiba-ken | Japan | 35.65 | 140.1666667 | 65 | 139815 |
| Yōkaichiba | city | Chiba-ken | Japan | 35.7 | 140.55 | 52 | 130333 |
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