| 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 | Entre Rios | Argentina | -31.79 | -58.31 | 187 | 447 |
| Ubajay | city | Corrientes | Argentina | -27.33 | -56.12 | 206 | 227 |
| Ucacha | city | Cordoba | Argentina | -33.03 | -63.51 | 830 | 4957 |
| Uclar | city | Santiago del Estero | Argentina | -27.12 | -64.42 | 882 | 298 |
| Ucle El Mangrullo | city | Santiago del Estero | Argentina | -28.10 | -64.97 | 1669 | 298 |
| Udaquilla | city | Buenos Aires | Argentina | -36.56 | -58.53 | 127 | 149 |
| Udaquiola | city | Buenos Aires | Argentina | -36.56 | -58.53 | 127 | 149 |
| Udpimango | city | La Rioja | Argentina | -28.68 | -66.82 | 3349 | 0 |
| Ugarteche | city | Mendoza | Argentina | -33.21 | -68.89 | 2916 | 3308 |
| Uguay | city | Corrientes | Argentina | -28.66 | -57.49 | 200 | 0 |
| Ulapes | city | La Rioja | Argentina | -31.57 | -66.24 | 1669 | 4590 |
| Ullún | city | San Juan | Argentina | -31.47 | -68.70 | 2509 | 9758 |
| Ullún | city | San Juan | Argentina | -31.48 | -68.70 | 2509 | 13167 |
| Umamaj | city | Santiago del Estero | Argentina | -28.68 | -63.63 | 344 | 298 |
| Umango | city | La Rioja | Argentina | -28.90 | -68.58 | 10068 | 0 |
| Umberto I | city | Santa Fe | Argentina | -30.87 | -61.35 | 255 | 447 |
| Umberto Primo | city | Santa Fe | Argentina | -30.87 | -61.35 | 255 | 447 |
| Unanué | city | La Pampa | Argentina | -37.54 | -64.35 | 830 | 496 |
| Unatuya | city | Santiago del Estero | Argentina | -28.46 | -62.83 | 328 | 18017 |
| Union Ferroviaria | city | Buenos Aires | Argentina | -34.87 | -58.54 | 68 | 109347 |
| Unión | city | Santiago del Estero | Argentina | -29.41 | -62.79 | 830 | 1690 |
| Unión | city | Santa Fe | Argentina | -32.90 | -60.71 | 19 | 102139 |
| Unión | city | San Luis | Argentina | -35.15 | -65.95 | 1217 | 989 |
| Unión | city | Santa Fe | Argentina | -32.65 | -61.37 | 203 | 745 |
| Unquillo | city | Cordoba | Argentina | -31.23 | -64.32 | 1889 | 24312 |
| Unzué | city | Buenos Aires | Argentina | -36.13 | -61.02 | 324 | 149 |
| Upianan | city | Santiago del Estero | Argentina | -28.87 | -64.37 | 334 | 270 |
| Upinango | city | La Rioja | Argentina | -28.68 | -66.82 | 3349 | 0 |
| Uquia | city | Jujuy | Argentina | -23.30 | -65.35 | 9639 | 684 |
| Uranga | city | Santa Fe | Argentina | -33.27 | -60.70 | 180 | 2665 |
| Urbano | city | Santa Fe | Argentina | -33.66 | -61.45 | 285 | 2919 |
| Urbs Platensis | city | Buenos Aires | Argentina | -34.92 | -57.95 | 78 | 111421 |
| Urbs Rosariensis | city | Santa Fe | Argentina | -32.95 | -60.64 | 13 | 74440 |
| Urdampilleta | city | Buenos Aires | Argentina | -36.45 | -61.43 | 383 | 1935 |
| Urdinarrain | city | Entre Rios | Argentina | -32.69 | -58.89 | 196 | 5681 |
| Uren Aike | city | Santa Cruz | Argentina | -49.57 | -68.92 | 354 | 0 |
| Uribelarrea | city | Buenos Aires | Argentina | -35.12 | -58.89 | 85 | 570 |
| Uriburu | city | La Pampa | Argentina | -36.51 | -63.86 | 830 | 421 |
| Uriburú | city | Corrientes | Argentina | -27.47 | -56.98 | 183 | 732 |
| Urizar | city | Tucuman | Argentina | -26.68 | -64.62 | 1164 | 658 |
| Urundel | city | Salta | Argentina | -23.56 | -64.40 | 1007 | 2625 |
| Urusmayo | city | Jujuy | Argentina | -22.56 | -66.35 | 12693 | 0 |
| Urutaú | city | Santiago del Estero | Argentina | -25.70 | -63.07 | 830 | 1188 |
| Ushau | city | La Pampa | Argentina | -38.63 | -66.00 | 830 | 0 |
| Ushuaia | city | Tierra del Fuego, Antartida e Islas del Atlantico Sur | Argentina | -54.80 | -68.30 | 0 | 16656 |
| Usiyal | city | San Luis | Argentina | -34.80 | -66.31 | 1669 | 0 |
| Usno | city | La Rioja | Argentina | -30.57 | -67.54 | 3349 | 716 |
| Uspallata | city | Mendoza | Argentina | -32.59 | -69.35 | 6141 | 3746 |
| Uspallata | city | Mendoza | Argentina | -32.68 | -69.37 | 5885 | 672 |
| Utracán | city | La Pampa | Argentina | -37.28 | -64.57 | 830 | 9 |
| Uturango | city | Tucuman | Argentina | -26.23 | -65.12 | 3421 | 379 |
| Uturunco | city | Tucuman | Argentina | -26.23 | -65.12 | 3421 | 379 |
| Uturungo | city | Santiago del Estero | Argentina | -26.86 | -64.41 | 830 | 298 |
| Uturusco | city | Santiago del Estero | Argentina | -28.28 | -63.95 | 416 | 2157 |
| Uyuvil Olcavil | city | La Rioja | Argentina | -28.72 | -67.32 | 5029 | 0 |
| Uzcudum | city | Chubut | Argentina | -44.27 | -66.17 | 1069 | 0 |
| Uzcudun | city | Chubut | Argentina | -44.27 | -66.17 | 1069 | 0 |
| Uşuaya | city | Tierra del Fuego, Antartida e Islas del Atlantico Sur | Argentina | -54.80 | -68.30 | 0 | 16656 |
| Ušuaja | city | Tierra del Fuego, Antartida e Islas del Atlantico Sur | Argentina | -54.80 | -68.30 | 0 | 16656 |
| Ušvaja | city | Tierra del Fuego, Antartida e Islas del Atlantico Sur | Argentina | -54.80 | -68.30 | 0 | 16656 |