| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| UAQ (SAN JUAN) | airport | Argentina | -31.57 | -68.42 | 1959 | 0 | |
| ULA (SAN JULIAN) | airport | Argentina | -49.31 | -67.80 | 190 | 0 | |
| USH (USHUAIA MALVINAS ARGENTINAS) | airport | Argentina | -54.84 | -68.30 | 71 | 0 | |
| USHUAIA EST AERONAVAL | airport | Argentina | -54.82 | -68.30 | 20 | 0 | |
| USHUAIA MALVINAS ARGENTINAS | airport | Argentina | -54.84 | -68.30 | 71 | 0 | |
| UZU (CURUZU CUATIA) | airport | Argentina | -29.77 | -57.98 | 229 | 0 | |
| Ubajay | city | Provincia de Entre Rios | Argentina | -31.78 | -58.30 | 164 | 447 |
| Ubajay | city | Provincia de Corrientes | Argentina | -27.33 | -56.12 | 305 | 227 |
| Ucacha | city | Provincia de Cordoba | Argentina | -33.03 | -63.52 | 600 | 4818 |
| Uclar | city | Provincia de Santiago del Estero | Argentina | -27.12 | -64.42 | 882 | 298 |
| Ucle El Mangrullo | city | Provincia de Santiago del Estero | Argentina | -28.10 | -64.97 | 1551 | 298 |
| Udaquilla | city | Provincia de Buenos Aires | Argentina | -36.57 | -58.52 | 124 | 149 |
| Udaquiola | city | Provincia de Buenos Aires | Argentina | -36.57 | -58.52 | 124 | 149 |
| Udpimango | city | Provincia de La Rioja | Argentina | -28.68 | -66.78 | 3070 | 0 |
| Ugarteche | city | Provincia de Mendoza | Argentina | -33.22 | -68.88 | 2893 | 3308 |
| Uguay | city | Provincia de Corrientes | Argentina | -28.65 | -57.48 | 203 | 0 |
| Ulapes | city | Provincia de La Rioja | Argentina | -31.58 | -66.25 | 1414 | 4590 |
| Ullun | city | Provincia de San Juan | Argentina | -31.47 | -68.70 | 2506 | 9758 |
| Ullun | city | Provincia de San Juan | Argentina | -31.48 | -68.70 | 2506 | 13167 |
| Umamaj | city | Provincia de Santiago del Estero | Argentina | -28.68 | -63.63 | 344 | 298 |
| Umango | city | Provincia de La Rioja | Argentina | -28.90 | -68.58 | 9721 | 0 |
| Umberto I | city | Provincia de Santa Fe | Argentina | -30.87 | -61.37 | 255 | 447 |
| Umberto Primo | city | Provincia de Santa Fe | Argentina | -30.87 | -61.37 | 255 | 447 |
| Unanue | city | Provincia de La Pampa | Argentina | -37.53 | -64.35 | 770 | 496 |
| Unatuya | city | Provincia de Santiago del Estero | Argentina | -28.47 | -62.83 | 324 | 18283 |
| Unidad Penitenciaria N° 30 Heliport | airport | Argentina | -36.04 | -60.02 | 180 | 0 | |
| Unión | city | Provincia de Santiago del Estero | Argentina | -29.40 | -62.78 | 456 | 1690 |
| Unión | city | Provincia de Santa Fe | Argentina | -32.90 | -60.70 | 16 | 94811 |
| Unión | city | Provincia de San Luis | Argentina | -35.15 | -65.95 | 1217 | 989 |
| Unión | city | Provincia de Santa Fe | Argentina | -32.65 | -61.37 | 203 | 745 |
| Unquillo | city | Provincia de Cordoba | Argentina | -31.23 | -64.32 | 1889 | 22281 |
| Unzue | city | Provincia de Buenos Aires | Argentina | -36.13 | -61.02 | 324 | 149 |
| Upianan | city | Provincia de Santiago del Estero | Argentina | -28.87 | -64.37 | 334 | 270 |
| Upinango | city | Provincia de La Rioja | Argentina | -28.68 | -66.78 | 3070 | 0 |
| Uquia | city | Provincia de Jujuy | Argentina | -23.30 | -65.35 | 9639 | 915 |
| Uranga | city | Provincia de Santa Fe | Argentina | -33.27 | -60.70 | 180 | 2676 |
| Urbano | city | Provincia de Santa Fe | Argentina | -33.65 | -61.45 | 288 | 2919 |
| Urdampilleta | city | Provincia de Buenos Aires | Argentina | -36.45 | -61.43 | 383 | 1935 |
| Urdinarrain | city | Provincia de Entre Rios | Argentina | -32.68 | -58.88 | 177 | 6508 |
| Urdinarrain Airport | airport | Argentina | -32.70 | -58.90 | 216 | 0 | |
| Uren Aike | city | Provincia de Santa Cruz | Argentina | -49.57 | -68.92 | 354 | 0 |
| Uribelarrea | city | Provincia de Buenos Aires | Argentina | -35.12 | -58.89 | 85 | 614 |
| Uriburu | city | Provincia de La Pampa | Argentina | -36.50 | -63.83 | 456 | 421 |
| Uriburu | city | Provincia de Corrientes | Argentina | -27.45 | -56.98 | 164 | 943 |
| Urizar | city | Provincia de Tucuman | Argentina | -26.68 | -64.62 | 1164 | 658 |
| Urundel | city | Provincia de Salta | Argentina | -23.55 | -64.42 | 1112 | 1672 |
| Urusmayo | city | Provincia de Jujuy | Argentina | -22.58 | -66.35 | 13494 | 0 |
| Urutaú | city | Provincia de Santiago del Estero | Argentina | -25.70 | -63.07 | 748 | 1188 |
| Ushau | city | Provincia de La Pampa | Argentina | -38.63 | -66.00 | 662 | 0 |
| Ushuaia | city | Antartida e Islas del Atlantico Sur, Territorio Nacional de la Tierra del Fuego | Argentina | -54.80 | -68.30 | 0 | 16656 |
| Usiyal | city | Provincia de San Luis | Argentina | -34.80 | -66.32 | 1489 | 0 |
| Usno | city | Provincia de La Rioja | Argentina | -30.57 | -67.53 | 2919 | 722 |
| Uspallata | city | Provincia de Mendoza | Argentina | -32.58 | -69.33 | 6692 | 3746 |
| Uspallata | city | Provincia de Mendoza | Argentina | -32.67 | -69.37 | 6220 | 662 |
| Uspallata Airport | airport | Argentina | -32.54 | -69.35 | 6525 | 0 | |
| Utracan | city | Provincia de La Pampa | Argentina | -37.27 | -64.57 | 715 | 0 |
| Uturango | city | Provincia de Tucuman | Argentina | -26.23 | -65.12 | 3421 | 379 |
| Uturunco | city | Provincia de Tucuman | Argentina | -26.23 | -65.12 | 3421 | 379 |
| Uturungo | city | Provincia de Santiago del Estero | Argentina | -26.87 | -64.40 | 721 | 298 |
| Uturusco | city | Provincia de Santiago del Estero | Argentina | -28.28 | -63.95 | 416 | 2157 |
| Uyuvil Olcavil | city | Provincia de La Rioja | Argentina | -28.72 | -67.32 | 4816 | 0 |
| Uzcudum | city | Provincia del Chubut | Argentina | -44.22 | -66.15 | 1108 | 0 |
| Uzcudun | city | Provincia del Chubut | Argentina | -44.22 | -66.15 | 1108 | 0 |