A nomad is a person with no settled home, who moves from place to place as a way of obtaining food, finding pasture for livestock, or otherwise making a living. The word nomad comes from a Greek word that means one who wanders for pasture. Most nomadic groups follow a fixed annual or seasonal pattern of movements and settlements. Nomadic peoples traditionally travel by animal or canoe or on foot. Today, some nomads travel by motor vehicle. Most nomads live in tents or other portable shelters.

Nomads keep moving for different reasons. Nomadic foragers move in search of game, edible plants, and water. The Australian Aborigines, Negritos of Southeast Asia, and San of Africa, for example, traditionally move from camp to camp to hunt and to gather wild plants. Some tribes of the Americas followed this way of life.

The nomadic way of life has become increasingly rare. Many governments dislike nomads because it is difficult to control their movement and to obtain taxes from them.

Pastoral nomads make their living raising livestock, such as camels, cattle, goats, horses, sheep, or yaks. These nomads travel to find more camels, goats, and sheep through the deserts of Arabia and northern Africa. The Fulani and their cattle travel through the grasslands of Niger in western Africa. Some nomadic peoples, especially herders, may also move to raid settled communities or avoid enemies. Nomadic craftworkers and merchants travel to find and serve customers. They include the Lohar blacksmiths of India, the Romani (Gypsy) traders, and the Irish Travellers.

The nomadic way of life has become increasingly rare. Many governments dislike nomads because it is difficult to control their movement and to obtain taxes from them. Many countries have converted pastures into cropland and forced nomadic peoples into permanent settlements.