| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Isabel Victoria | city | Corrientes | Argentina | -29.11 | -59.10 | 193 | 512 |
| Isca Yacú | city | Santiago del Estero | Argentina | -27.03 | -64.61 | 921 | 784 |
| Ischilin Viejo | city | Cordoba | Argentina | -30.61 | -64.34 | 3349 | 298 |
| Ischilín | city | Cordoba | Argentina | -30.58 | -64.37 | 2883 | 298 |
| Isidro Casanova | city | Buenos Aires | Argentina | -34.70 | -58.59 | 78 | 449230 |
| Isla Baja | city | Santiago del Estero | Argentina | -29.05 | -62.34 | 282 | 149 |
| Isla Demarchi | city | Buenos Aires | Argentina | -34.62 | -58.35 | 0 | 520079 |
| Isla El Simbolar | city | Santa Fe | Argentina | -32.03 | -60.75 | 6 | 603 |
| Isla Larga | city | Cordoba | Argentina | -30.93 | -63.72 | 830 | 0 |
| Isla Las Flores | city | Santa Fe | Argentina | -32.12 | -60.83 | 62 | 596 |
| Isla Las Tejas al Sur | city | Santa Fe | Argentina | -32.09 | -60.79 | 39 | 596 |
| Isla Los Blancos al Sur | city | Santa Fe | Argentina | -32.10 | -60.74 | 26 | 750 |
| Isla Negra | city | Cordoba | Argentina | -30.05 | -63.17 | 278 | 149 |
| Isla Negra | city | Formosa | Argentina | -25.42 | -57.81 | 193 | 596 |
| Isla San Antonio | city | Cordoba | Argentina | -30.03 | -64.42 | 1669 | 9 |
| Isla Tejas al Centro | city | Santa Fe | Argentina | -32.04 | -60.79 | 16 | 596 |
| Isla Verde | city | Cordoba | Argentina | -33.24 | -62.40 | 360 | 3398 |
| Isla Verde | city | Santiago del Estero | Argentina | -28.65 | -64.15 | 357 | 425 |
| Isla Verde | city | Cordoba | Argentina | -30.03 | -62.72 | 262 | 138 |
| Isla Verde | city | Cordoba | Argentina | -29.93 | -62.87 | 341 | 149 |
| Isla Verde | city | Santiago del Estero | Argentina | -28.68 | -64.20 | 387 | 409 |
| Isla Verde | city | Chaco | Argentina | -27.57 | -59.04 | 127 | 7875 |
| Isla Yobay Guazú | city | Formosa | Argentina | -25.13 | -58.34 | 223 | 923 |
| Isla de San Antonio | city | Cordoba | Argentina | -30.03 | -64.42 | 1669 | 9 |
| Isla de los Castillos | city | Santiago del Estero | Argentina | -27.53 | -64.88 | 830 | 14519 |
| Isla de los Chorros | city | Cordoba | Argentina | -30.15 | -63.28 | 291 | 149 |
| Isla de los Sotelo | city | Santiago del Estero | Argentina | -27.48 | -64.69 | 830 | 596 |
| Isla del Rosario | city | Santiago del Estero | Argentina | -28.63 | -64.33 | 383 | 447 |
| Islas | city | Buenos Aires | Argentina | -35.57 | -60.36 | 203 | 298 |
| Islas | city | Santiago del Estero | Argentina | -28.37 | -64.13 | 830 | 967 |
| Islas San Bernardo | city | Salta | Argentina | -23.60 | -63.07 | 830 | 149 |
| Isleta | city | Santiago del Estero | Argentina | -28.73 | -64.12 | 370 | 321 |
| Isleta Linda | city | Santa Fe | Argentina | -28.77 | -61.06 | 164 | 0 |
| Isleta Negra | city | La Pampa | Argentina | -36.17 | -66.37 | 1053 | 0 |
| Isleta Negra | city | Cordoba | Argentina | -30.48 | -63.17 | 216 | 0 |
| Isleta de las Cuatro Tinajeras | city | La Pampa | Argentina | -35.35 | -64.92 | 967 | 149 |
| Isleta del Aromito | city | Chaco | Argentina | -27.98 | -60.22 | 203 | 139 |
| Isletas del Castano | city | Cordoba | Argentina | -34.58 | -65.08 | 980 | 233 |
| Isletas las Estacas | city | Santa Fe | Argentina | -31.26 | -60.41 | 42 | 0 |
| Isleto | city | Entre Rios | Argentina | -32.42 | -58.39 | 36 | 447 |
| Ismiango | city | La Rioja | Argentina | -29.05 | -66.98 | 5029 | 107 |
| Isoqui | city | Corrientes | Argentina | -29.10 | -56.67 | 193 | 562 |
| Isthilart | city | Entre Rios | Argentina | -31.18 | -57.97 | 82 | 186 |