伊兰羚羊（学名Taurotragus oryx），又名巨羚、大羚羊，是东非及南部非洲大草原及平原的一种羚羊。

伊兰羚羊与德氏大羚羊一同被认为是最大的羚羊种，不过牠们其实更像牛。雌羊重300-600公斤，长200-280厘米，肩高125-153厘米。公羊重400-1000公斤，长240-345厘米，肩高150-183厘米。尾巴长约50-90厘米。雌羊呈黄褐色，公羊较为深色，有一点蓝灰色，也有一些两侧有白色斑纹。公羊前额的毛发很密，喉袋很大。公羊及雌羊都有角，角长65厘米。雌羊两角较阔。

The common eland (Taurotragus oryx), also known as the southern eland or eland antelope, is a savannah and plains antelope found in East and Southern Africa. It is a species of the family Bovidae and genus Taurotragus. It was first described by Peter Simon Pallas in 1766. An adult male is around 1.6 metres (5') tall at the shoulder (females are 20 centimetres (8") shorter) and can weigh up to 942 kg (2077 lbs) with an average of 500–600 kilograms (1,100–1,300 lb, 340–445 kilograms (750–980 lb) for females). It is the second largest antelope in the world, being slightly smaller on average than the giant eland.