Pottawatomie County is a county located in the U.S. state of Oklahoma. The population was 69,442 at the 2010 census, a 3,9 percent increase from 65,521 as of the 2000 census. Its county seat is Shawnee. Pottawatomie County is part of the Shawnee Micropolitan Statistical Area and the Oklahoma City–Shawnee Combined Statistical Area.

Pottawatomie County was carved out of land originally given to the Creek and Seminole after their forced removal from Georgia and Florida. After the Civil War, the Creek and Seminole were forced to cede their lands back to the federal government, and the area of Pottawatomie County was used to resettle the Iowa, Sac and Fox, Absentee Shawnee, Potawatomi and Kickapoo tribes.

Non-Indian settlement began on September 22, 1891 when all the tribes except the Kickapoo agreed to land allotment, where communal reservation land was divided and allotted to individual members of the tribes. The remaining land was opened to settlement.

During the land run, Pottawatomie County was organized as County "B" with Tecumseh as the county seat. In 1892, the voters of the county elected to rename County "B" as Pottawatomie County after the Potawatomi Indians.

Oklahoma (ⁱ/ˌoʊkləˈhoʊmə/) (Pawnee: Uukuhuúwa , Cayuga: Gahnawiyoˀgeh ) is a state located in the South Central region of the United States of America. Oklahoma is the 20th most extensive and the 28th most populous of the 50 United States. The state's name is derived from the Choctaw words okla and humma, meaning "red people", and it is known informally by its nickname, The Sooner State. Formed by the combination of Oklahoma Territory and Indian Territory on November 16, 1907, Oklahoma was the 46th state to enter the union. Its residents are known as Oklahomans or, informally "Okies", and its capital and largest city is Oklahoma City.

A major producer of natural gas, oil, and agriculture, Oklahoma relies on an economic base of aviation, energy, telecommunications, and biotechnology. It has one of the fastest growing economies in the nation, ranking among the top states in per capita income growth and gross domestic product growth. Oklahoma City and Tulsa serve as Oklahoma's primary economic anchors, with nearly 60 percent of Oklahomans living in their metropolitan statistical areas.