A tribal chief is the leader of a tribal society

Tribe

A tribe, viewed historically or developmentally, consists of a social group existing before the development of, or outside of, states.Many anthropologists use the term tribal society to refer to societies organized largely on the basis of kinship, especially corporate descent groups .Some theorists...

 or chiefdom

Chiefdom

A chiefdom is a political economy that organizes regional populations through a hierarchy of the chief.In anthropological theory, one model of human social development rooted in ideas of cultural evolution describes a chiefdom as a form of social organization more complex than a tribe or a band...

. Tribal societies with social stratification

Social stratification

In sociology the social stratification is a concept of class, involving the "classification of persons into groups based on shared socio-economic conditions ... a relational set of inequalities with economic, social, political and ideological dimensions."...

 under a single (or dual

Diarchy

Diarchy , from the Greek δι- "twice" and αρχια, "rule", is a form of government in which two individuals, the diarchs, are the heads of state. In most diarchies, the diarchs hold their position for life and pass the responsibilities and power of the position to their children or family when they...

) leader emerged in the Neolithic

Neolithic

The Neolithic Age, Era, or Period, or New Stone Age, was a period in the development of human technology, beginning about 9500 BC in some parts of the Middle East, and later in other parts of the world. It is traditionally considered as the last part of the Stone Age...

 period out of earlier tribal structures with little stratification, and they remained prevalent throughout the Iron Age

Iron Age

The Iron Age is the archaeological period generally occurring after the Bronze Age, marked by the prevalent use of iron. The early period of the age is characterized by the widespread use of iron or steel. The adoption of such material coincided with other changes in society, including differing...

.

In the case of indigenous

Indigenous peoples

Indigenous peoples are ethnic groups that are defined as indigenous according to one of the various definitions of the term, there is no universally accepted definition but most of which carry connotations of being the "original inhabitants" of a territory....

 tribal societies existing within larger colonial and post-colonial states, tribal chiefs may represent their tribe or ethnicity in a form of self-government.

The most common types are the chairman of a council (usually of "elder

Elder (administrative title)

The term Elder is used in several different countries and organizations to indicate a position of authority...

s") and/or a broader popular assembly

Popular assembly

A popular or people's assembly is a gathering called to address issues of importance to participants. Assemblies tend to be freely open to participation and operate by direct democracy...

 in "parliamentary" cultures, the war chief

War chief

War chief can refer to* Warlord* Tribal chief during wartime, particularly among Native Americans...

 (may be an alternative or additional post in war time), the hereditary chief and the politically dominant medicineman (in "theocratic

Theocracy

Theocracy is a form of organization in which the official policy is to be governed by immediate divine guidance or by officials who are regarded as divinely guided, or simply pursuant to the doctrine of a particular religious sect or religion....

" cultures).

The term is usually distinct from chiefs at still lower levels, such as village headman (geographically defined) or clan chief (an essentially genealogical notion), as the notion "tribal" rather requires an ethno-cultural identity (racial, linguistic, religious etc.) as well as some political (representative, legislative, executive and/or judicial) expression.

Anthropologist Elman Service

Elman Service

Elman Rogers Service was an American cultural anthropologist.- Biography :He was born on May 18, 1915 in Tecumseh, Michigan and died on November 14, 1996 in Santa Barbara, California. He earned a Bachelors Degree in 1941 from the University of Michigan. He earned a Ph.D. in Anthropology from...

 distinguishes two stages of tribal societies,
simple societies organised by limited instances of social rank and prestige, and more stratified societies led by chieftains or tribal kings (chiefdom

Chiefdom

A chiefdom is a political economy that organizes regional populations through a hierarchy of the chief.In anthropological theory, one model of human social development rooted in ideas of cultural evolution describes a chiefdom as a form of social organization more complex than a tribe or a band...

s).