Clans

A, in the loosest sense of the term, refers to a family or group of shinobi who form a basic unit of a shinobi village. A majority of these clans were mercenary military forces even before the First Shinobi World War. The Senju clan and Uchiha clan were the first known clans to have agreed to settle and form a shinobi village, facilitated by creating agreements with the daimyō of the land they inhabit. Many clans would follow the example of the Senju and the Uchiha, later establishing the Five Great Shinobi Countries as they are known today.

Membership in a clan is usually determined by blood relations and genetics, which is vital in the usage of kekkei genkai and secret techniques. These attributes and abilities made many clans feared and renowned throughout many villages. While clans may be composed of many individuals and extended families, many clans mentioned and seen in the series were somewhat limited to a nuclear family.

Notable Families
While not at a "Clan" status, there are also certain individual Families as well.

Haruno Family
The Haruno Family is a family within Konohagakure that has recent ties to the Uchiha Clan.

Izuno Family
The Izuno Family is a family within Konohagakure.

Kakei Family
The Shigaraki Family was a family within Konohagakure loyal to Danzō Shimura and his Root Organization, which changed its name to "Kakei" recently.

Kaminarimon Family
The Kaminarimon Family is a family within Konohagakure which have recently risen to wealthy prominence with the Technological and Industrial Revolution.

Suzumeno Family
The Izuno Family is a family within Konohagakure.

Trivia

 * Kokage Yanagikage from Konohagakure is stated to be from a clan which specialises in research of concealed weapons and how to use them.