水羚（学名：Kobus ellipsiprymnus），又称非洲大羚羊，是一种生活在西非、中非、东非及南非的羚羊。

水羚肩高190-210厘米及体重160-240公斤。牠们的毛皮是褐红色及随着年纪而转暗。在气管附近有白色的围兜，及在尾巴处有白色的围圈。只有雄性有角，角呈螺旋型并向后弯。

水羚会在灌木林及大草原近水的地方吃草。虽然牠们的名字与水有关，但牠们并不喜欢进入水中。水羚是白天活动的动物。2-600头雌性水羚会聚集成群。雄性会在自己年青时保护自己约300英亩的领域。但在十岁前会开始失去牠们的领域。

The waterbuck (Kobus ellipsiprymnus) is a large antelope found widely in sub-Saharan Africa. It is placed in the genus Kobus of the family Bovidae. It was first described by Irish naturalist William Ogilby in 1833. The thirteen subspecies are grouped under two varieties: the common or ellipsen waterbuck and the defassa waterbuck. The head-and-body length is typically between 177–235 cm (70–93 in) and the average height is between 120 and 136 cm (47 and 54 in). A sexually dimorphic antelope, males are taller as well as heavier than females. Males reach approximately 127 cm (50 in) at the shoulder, while females reach 119 cm (47 in). Males typically weigh 198–262 kg (437–578 lb) and females 161–214 kg (355–472 lb). The coat colour varies from brown to grey. The long, spiral horns, present only on males, curve backward, then forward and are 55–99 cm (22–39 in) long.