Maasai society is strongly patriarchal in nature, with elder men, sometimes joined by retired elders, deciding most major matters for each Maasai group. A full body of oral law covers many aspects of behavior. Formal execution is unknown, and normally payment in cattle will settle matters. An out-of-court process is also practiced called ‘amitu’, ‘to make peace’, or ‘arop’, which involves a substantial apology.
The monotheistic Maasai worship a single deity called Enkai or Engai . Engai has a dual nature: Engai Narok (Black God) is benevolent, and Engai Na-nyokie (Red God) is vengeful.  There are also two pillars or totems of Maasai society: Oodo Mongi, the Red Cow and Orok Kiteng, the Black Cow with a subdivision of five clans or family trees.
There are twelve geographic sectors of the tribe, each one having its own customs, appearance, leadership and dialects. These subdivisions are known as clans:
1.Keekonyokie 2.Damat 3.Purko 4.Wuasinkishu 5.Siria 6.Laitayiok 7.Loitai 8.Kisonko 9.Matapato 10.Dalalekutuk, 11.Loodokolani 12.Kaputiei.
The basic institution of social integration, however, is the system of age-sets. Under this system, groups of the same age are initiated (circumcised) into adult life during the same open-initiation period; the age-class thus formed is a permanent grouping, lasting the life of its members. They move up through a hierarchy of grades, each lasting approximately 15 years, including those of junior warriors, senior warriors, and junior elders, until they become senior elders authorized to make decisions for the tribe. Maasai society is remarkably egalitarian; slaves have never been kept.