| Ubre | Udder |
| Unidades equivalentes de leche | Milk equivalents |
| Uperización | Uperization |
| Vaca lechera | Dairy cow, milk cow |
| Vaca lechera, vaca de leche | Cow in milk |
| Vaca preñada | Cow in calf (bovidae sp.) |
| Vaca seca | Dry cow (cow not in lactation) |
| Vagón cisterna | Milk tanker |
| Vaquería | Cow house, cow shedd, byre, shippen |
| Veranero, periodo estival | Summering of dairy cattle |
| Vitamina d soluble en la grasa láctea | Fat-soluble vitamin d in milk |
| Yogur | Yoghurt, yogurt (a sour, semisolid fermented milk) |
| Yogur cultivado | Cultured yoghurt |