The Caucasian race is an obsolete racial classification of humans based on a now-disproven theory of biological race. The Caucasian race was historically regarded as a biological taxon which, depending on which of the historical race classifications was being used, usually included ancient and modern populations from all or parts of Europe, Western Asia, Central Asia, South Asia, North Africa, and the Horn of Africa.

The concept of race as a categorization of anatomically modern humans has an extensive history in Europe and the Americas. The contemporary word race itself is modern; historically it was used in the sense of "nation, ethnic group" during the 16th to 19th centuries. Race acquired its modern meaning in the field of physical anthropology through scientific racism starting in the 19th century. With the rise of modern genetics, the concept of distinct human races in a biological sense has become obsolete. In 2019, the American Association of Biological Anthropologists stated: "The belief in 'races' as natural aspects of human biology, and the structures of inequality (racism) that emerge from such beliefs, are among the most damaging elements in the human experience both today and in the past."