Charles Nathaniel Haskell (March 13, 1860 – July 5, 1933) was an American lawyer, oilman, and politician who was the first governor of Oklahoma. As a delegate to Oklahoma's constitutional convention in 1906, he played a crucial role in drafting the Oklahoma Constitution and gaining Oklahoma's admission into the United States as the 46th state in 1907. A prominent businessman in Muskogee, he helped the city grow in importance. He represented the city as a delegate in both the 1906 Oklahoma convention and an earlier convention in 1905 that was a failed attempt to create a U.S. state of Sequoyah.