| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Yectayo | city | Departamento de Ica | Peru | -13.92 | -75.92 | 1240 | 596 |
| Yencala | city | Departamento de Lambayeque | Peru | -6.70 | -79.96 | 26 | 21980 |
| Yencala | city | Departamento de Piura | Peru | -5.18 | -80.13 | 469 | 6350 |
| Yencala Hacienda | city | Departamento de Lambayeque | Peru | -6.70 | -79.96 | 26 | 21980 |
| Yencala Leon | city | Departamento de Lambayeque | Peru | -6.70 | -79.95 | 22 | 19806 |
| Yencala Leon | city | Departamento de Lambayeque | Peru | -6.70 | -79.96 | 26 | 21980 |
| Yerba Buena | city | Departamento de Moquegua | Peru | -17.31 | -71.46 | 318 | 310 |
| Yerba Buena | city | Departamento de Ica | Peru | -13.57 | -75.70 | 5511 | 298 |
| Yerba Buena | city | Departamento de Lima | Peru | -11.35 | -77.37 | 1525 | 5089 |
| Yerba Buena | city | Departamento de Ancash | Peru | -8.93 | -78.22 | 7903 | 14610 |
| Yerba Buena | city | Departamento de La Libertad | Peru | -7.72 | -78.35 | 11482 | 6804 |
| Yerba Buena | city | Departamento de Cajamarca | Peru | -7.65 | -78.23 | 9678 | 3427 |
| Yerba Buena | city | Departamento de Piura | Peru | -4.80 | -79.82 | 6190 | 3765 |
| Yerba Buena | city | Departamento de Piura | Peru | -4.28 | -80.90 | 1095 | 2876 |
| Yerba Buena | city | Departamento de Cajamarca | Peru | -6.99 | -78.39 | 11978 | 4818 |
| Yerba Buena | city | Departamento de Cajamarca | Peru | -6.94 | -78.18 | 10351 | 9504 |
| Yerba Buena | city | Departamento de Piura | Peru | -5.65 | -79.48 | 6873 | 2533 |
| Yerba Buena | city | Departamento de Ancash | Peru | -8.94 | -78.21 | 7808 | 12884 |
| Yerba Santa | city | Departamento de Ica | Peru | -13.58 | -75.70 | 5810 | 298 |
| Yerba Santa | city | Departamento de Huanuco | Peru | -9.77 | -76.37 | 10032 | 4618 |
| Yerbabuena | city | Departamento de Apurimac | Peru | -13.99 | -72.42 | 13825 | 1929 |
| Yerbabuena | city | Departamento de Ancash | Peru | -10.52 | -77.43 | 5242 | 495 |
| Yerbabuena | city | Departamento de Ancash | Peru | -10.52 | -77.42 | 6095 | 500 |
| Yerbabuena | city | Departamento de Lambayeque | Peru | -5.98 | -79.52 | 6325 | 1938 |
| Yerbabuena | city | Departamento de Ancash | Peru | -8.94 | -78.10 | 7096 | 1341 |
| Yerbabuena | city | Departamento de Ancash | Peru | -8.77 | -78.23 | 8713 | 12608 |
| Yerbabuena | city | Departamento de Ancash | Peru | -8.94 | -78.21 | 7808 | 12884 |
| Yerbabuena | city | Departamento de Amazonas | Peru | -6.57 | -77.83 | 6541 | 3838 |
| Yerbabuena | city | Departamento de Ancash | Peru | -9.02 | -77.51 | 11893 | 4655 |
| Yerbabuena | city | Departamento de Cusco | Peru | -13.64 | -72.43 | 9068 | 1991 |
| Yerbabuena | city | Departamento de Junin | Peru | -11.62 | -75.06 | 16279 | 2032 |
| Yerbabuena Ciudad | city | Departamento de Piura | Peru | -4.80 | -79.82 | 6190 | 3765 |
| Yerbabuenayoc | city | Departamento de Huancavelica | Peru | -13.92 | -75.22 | 11906 | 586 |
| Yerbabuenayoc | city | Departamento de Cusco | Peru | -13.03 | -72.06 | 12933 | 1339 |
| Yerbabuenayoc | city | Departamento de Junin | Peru | -11.73 | -75.13 | 16394 | 1479 |
| Yerbales | city | Departamento de Tumbes | Peru | -3.83 | -80.32 | 2043 | 5 |
| Yesal | city | Departamento de Piura | Peru | -5.28 | -80.75 | 45 | 13796 |
| Yesera | city | Departamento de Lima | Peru | -12.68 | -76.38 | 2536 | 149 |
| Yesera | city | Departamento de Tacna | Peru | -17.34 | -70.24 | 9737 | 1304 |
| Yeso | city | Departamento de Amazonas | Peru | -6.65 | -77.81 | 7949 | 5047 |
| Yeso Jirca | city | Departamento de Ancash | Peru | -10.46 | -77.36 | 13982 | 662 |
| Yeso Tacana | city | Departamento de Huanuco | Peru | -9.83 | -76.82 | 13198 | 10398 |
| Yesup | city | Departamento de Pasco | Peru | -10.63 | -75.18 | 2883 | 1788 |