The Omaha (Omaha-Ponca: Umoⁿhoⁿ) are a Native American tribe in the Central Plains and Midwestern United States. They are a federally recognized as the Omaha Tribe of Nebraska and control the Omaha Reservation in northeastern Nebraska and western Iowa, United States. The Omaha Indian Reservation lies primarily in the southern part of Thurston County and northeastern Cuming County, Nebraska, but small parts extend into the northeast corner of Burt County and across the Missouri River into Monona County, Iowa. Its total land area is and a population of 5,194 was recorded in the 2000 census.

The Omaha people migrated to the upper Missouri River basin and the Plains by the late 17th century from earlier locations in the Ohio River Valley. The Omaha speak a Siouan language of the Dhegihan branch, which is very similar to that spoken by the Ponca. The latter were part of the Omaha before splitting off into a separate tribe in the mid-18th century. They are also related to the Osage, Quapaw, Kansa peoples, who also migrated from the Ohio Valley.

About 1770, the Omaha became the first tribe on the Northern Plains to adopt equestrian culture. As the tribe migrated west, it split into what became the Omaha and the Quapaw tribes. The Quapaw settled in what is now Arkansas and the Omaha, known as U-Mo'n-Ho'n ("upstream") settled near the Missouri River in what is now northwestern Iowa. Another division happened, with the Ponca becoming an independent tribe, but they tended to settle near the Omaha. The first European journal reference to the Omaha tribe was made by Pierre-Charles Le Sueur in 1700. Informed by reports, he described an Omaha village with 400 dwellings and a population of about 4,000 people. It was located on the Big Sioux River near its confluence with the Missouri, near present-day Sioux City, Iowa. The French then called it "The River of the Mahas."

thumb|right|250px|Tribal territory of Omaha and other tribes

In 1718, the French cartographer Guillaume Delisle mapped the tribe as "The Maha, a wandering nation", along the northern stretch of the Missouri River. French fur trappers found the Omaha on the eastern side of the Missouri River in the mid-18th century. The Omaha were believed to have ranged from the Cheyenne River in South Dakota to the Platte River in Nebraska. Around 1734 the Omaha established their first village west of the Missouri River on Bow Creek in present-day Cedar County, Nebraska.

Around 1775 the Omaha developed a new village, probably located near present-day Homer, Nebraska.

After the United States made the Louisiana Purchase and exerted pressure on the trading in this area, there was a proliferation of different kinds of goods among the Omaha: tools and clothing became prevalent, such as scissors, axes, top hats and buttons. Women took on more manufacturing of goods for trade, as well as hand farming, perhaps because of evolving technology. Those women buried after 1800 had shorter, more strenuous lives; none lived past the age of 30. But they also had larger roles in the tribe's economy. Researchers have found through archeological excavations that the later women's skeletons were buried with more silver artifacts as grave goods than those of the men, or of women before 1800.

For nearly 15 years in the 19th century, Logan Fontenelle was the interpreter at the Bellevue Agency, serving different US Indian agents. The mixed-race Omaha-French man was bilingual and also worked as a trader. His mother was Omaha; his father French Canadian. In January 1854 he acted as interpreter during the agent James M. Gatewood's negotiations for land cessions with 60 Omaha leaders and elders, who sat in council at Bellevue. Gatewood had been under pressure by Washington headquarters to achieve a land sale. The Omaha elders refused to delegate the negotiations to their gens chiefs, but came to an agreement to sell most of their remaining lands west of the Missouri to the United States. Competing interests may be shown by the draft treaty containing provisions for payment of tribal debts to the traders Fontenelle, Peter Sarpy, and Louis Saunsouci. The chiefs at council agreed to move from the Bellevue Agency further north, finally choosing the Blackbird Hills, essentially the current reservation in Thurston County, Nebraska.

The 60 men designated seven chiefs to go to Washington, DC for final negotiations along with Gatewood, with Fontenelle to serve as their interpreter. The chief Iron Eye (Joseph LaFlesche) was among the seven who went to Washington and is considered the last chief of the Omaha under their traditional system. Logan Fontenelle served as their interpreter, and whites mistakenly believed he was a chief. Because his father was white, the Omaha never accepted him as a member of the tribe, but considered him white.]]

The tribe finally removed to the Blackbird Hills about 1856, and they first built a village in its traditional pattern. By the 1870s, bison were quickly disappearing from the plains, and the Omaha had to rely increasingly for survival upon their cash annuities and supplies from the United States Government and adaptation to subsistence agriculture. Jacob Vore was a Quaker appointed as US Indian agent to the Omaha Reservation under President Ulysses S. Grant. He started in September 1876, succeeding T.S. Gillingham, also a Quaker.

Vore distributed a reduced annuity that year, just before the Omaha left on their annual buffalo hunt; according to his later account, he intended to "encourage" the Omaha to work at more agriculture. They suffered a poor hunting season and severe winter, so that some were starving before late spring. Vore gained a supplement to the annuities which he had distributed, but for the remaining years of his tenure through 1879, distributed no cash annuities of the $20,000/year which was part of the treaty. Instead, he supplied goods: harrows, wagons, harnesses and various kinds of plows and implements to support the agricultural work. He told the tribe that Washington, DC officials had disapproved the annuity. The people had no recourse, and struggled to raise more produce, increasing the harvest to 20,000 bushels. The Omaha established their Blackbird Bend Casino on this reclaimed territory.

Archaeology

In 1989 the Omaha reclaimed more than 100 ancestral skeletons from Ton-wo-tonga, which had been held by museums. They had been excavated during archeological work of the 1930s and 1940s, from gravesites with burials before and after 1800. Before having ceremonial reburial of the remains on Omaha lands, the tribe's representatives arranged for research at the University of Nebraska to see what could be learned from their ancestors.

Researchers found considerable differences in the community before and after 1800, as revealed in their bones and artifacts. Most significantly, they discovered that the Omaha were an equestrian Plains culture and buffalo hunters by 1770, making them the "first documented equestrian culture on the Northern Plains." He served for decades from 1853.

Although whites considered Logan Fontenelle a chief, the Omaha did not. They used him as an interpreter; he was of mixed-race with a white father, so was considered white, as he had not been adopted by a man of the tribe.

Dwellings

thumb|Omaha tipi. The Omaha earth lodge was substituted with a moveable tipi during hunts on the open plains.

As the tribe migrated westward from the Ohio River region in the 17th century, they adapted to the Plains environment. They replaced the Woodland custom of bark lodges with tipis (borrowed from the Sioux) for the buffalo hunting and summer season, and built earth lodges (borrowed from the Arikara, called Sand Pawnee,) for the winter. Tipis were used primarily during buffalo hunts and when they relocated from one village area to another. They used earth lodges as dwellings during the winter.

Omaha beliefs were symbolized in their dwelling structures. During most of the year, Omaha Indians lived in earth or sod lodges, ingenious structures with a timber frame and a thick sod covering. At the center of the lodge was a fireplace that recalled their creation myth. The earthlodge entrance was built to face east, to catch the rising sun and remind the people of their origin and migration upriver from the east.

The Huthuga, the circular layout of tribal villages, reflected the tribe's beliefs. Sky people lived in the northern half-circle of the village, the area that symbolized the heavens. Earth people lived in the southern half, which represented the earth. The circle opened to the east. Within each half of the village, the clans or gentes were located based on their members' tribal duties and relationship to other clans. Earth lodges were as large as in diameter and might hold several families, even their horses.

When the tribe removed to the Omaha Reservation about 1856, they initially built their village and earth lodges in the traditional patterns, with the half-tribes and clans in their traditional places in the layout.

Religion

The Omaha revere an ancient Sacred Pole, from before the time of their migration to the Missouri, made of cottonwood. It is called Umoⁿ'hoⁿ'ti (meaning "The Real Omaha") and considered to be a person. It was kept in a Sacred Tent in the center of the village, which only men who were members of the Holy Society could enter. An annual renewal ceremony was related to the Sacred Pole.

The Sacred Pole is said to represent the body of a man. The name by which it is known, a-kon-da-bpa, is the word used to designate the leather bracer worn upon the wrist of an Indian for protection from the bow string (of the weapon of bow and arrow). This name demonstrates that the pole was intended to symbolize a man, as no other creature could wear a bracer. It also indicated that the man thus symbolized was one who was both a provider for and a protector of his people.