板齿犀（Elasmotherium）是一类巨大的已经灭绝的犀牛，平均高约2米及长5米，前额上有长达2米的角，估计重达5吨。牠的脚较其他犀牛长，适合跃步，姿势有点像马，有可能善于奔跑。牠的牙齿像现今的马，可以吃矮小的植物。

最大及最近期的物种是西伯利亚板齿犀，分布在更新世的俄罗斯南部、乌克兰及摩尔多瓦。牠于上新世晚期的中亚出现，其起源可能与中国犀有关。古板齿犀及裴氏板齿犀生活在上新世晚期至更新世早期的中国东部，估计于约1600万年前消失。俄罗斯最古老的板齿犀物种是生存在上新世晚期黑海的高加索板齿犀。板齿犀在东欧生存至更新世中期。

Elasmotherium ("Thin Plate Beast"), also known as the giant rhinoceros, is an extinct genus of rhinoceros endemic to Eurasia during the Late Pliocene through the Pleistocene, documented from 2.6 Ma to as late as 29,000 years ago in the Late Pleistocene. Three species are recognised. The best known, E. sibiricum, was the size of a mammoth and is thought to have borne a large, thick horn on its forehead. Theories about the function of this horn include defense, attracting mates, driving away competitors, sweeping snow from the grass in winter and digging for water and plant roots. Like all rhinoceroses, elasmotheres were herbivorous. Unlike any others, its high-crowned molars were ever-growing. Its legs were longer than those of other rhinos and were adapted for galloping, giving it a horse-like gait.