Carter Nine was an unincorporated community in Osage County, Oklahoma, United States, located 2.5 miles (4.0 km) south of Shidler. Carter Nine had a post office, which opened on August 14, 1928. Carter Nine began as a company-owned town to house workers for an oil refinery operated by the Carter Oil Company. The company originally planned to build housing in Burbank, but decided the cost would be too high. Instead it created its own town in 1922, known as Carter Nine.