Human migration denotes any movement by humans from one locality to another, sometimes over long distances or in large groups. Humans are known to have migrated extensively throughout history and prehistory.

Migration (resulting in population isolation) is one of the four evolutionary forces (along with natural selection, genetic drift, and mutation). The discipline of Population genetics is the study of the distribution of and change in gene variation (allele) frequencies under such influences.

The movement of populations in modern times has continued under the form of both voluntary migration within one's region, country, or beyond, and involuntary migration (which includes the slave trade, trafficking in human beings and ethnic cleansing). People who migrate are called migrants, or, more specifically, emigrants, immigrants or settlers, depending on historical setting, circumstances and perspective.