The gemsbok or gemsbuck is a large African antelope. The name is derived from the Dutch name of the male chamois, Gemsbok. Although there are some superficial similarities in appearance (especially in the colour of the face area), the chamois and the oryx are not related.

Gemsbok live in herds of about 10-40 animals, which consist of a dominant male, a few non-dominant males, and females. They often live in association with zebras, gazelles or other antelopes. The female's horns may be curved but the male's are thicker and parallel. Male gemsbok have been known to gore attacking lions with their horns.

There are two types of gemsbok: a northern and southern variety. The northern gemsboks have black-fringed ears while the southern ones have longer horns and more rounded ears.

Gemsbok are mainly desert-dwelling and do not depend on drinking to supply their physiological water needs.

Gemsbok have an average shoulder height of four feet (One metre, 20 centimetres) and can weigh up to 450 pounds (200 kilograms).