长颈鹿科，学名Giraffidae，属于偶蹄目反刍亚目。

本科下又分长颈鹿属的长颈鹿(Giraffa camelopardalis)与霍加狓属的霍加狓(Okapia johnstoni)两种。都分布于撒哈拉沙漠以南的非洲。这两个物种在第一眼看到时相当不像，但牠们分享着一些共同特征，如长、黑的舌头、分裂的犬齿等。 长颈鹿是偶蹄目中最独特的一类，牙齿为原始的低冠型，不能以草为食，只能以树叶为食；舌头较长。头上有短角，角上有被毛的皮肤覆盖；现存仅分布于非洲，有两属两种。 与长颈鹿科关系较近的动物是反刍亚目的其他动物，如牛、羊、羚羊等等。

Giraffidae is a family of ruminant artiodactyl mammals that shares a common ancestor with deer and bovids. This family, once a diverse group spread throughout Eurasia and Africa, presently comprises only two extant members, the giraffe (the only living species of Giraffa) and the okapi (the only known species of Okapia). Both are confined to Sub-Saharan Africa: the giraffe to the open savannas, and the okapi to the dense rainforest of the Congo. The two species look very different on first sight, but share a number of common features, including a long, dark-coloured tongue, lobed canine teeth, and horns covered in skin, called ossicones.