Hartshorne (pronounced "Hearts-orn") is a city in Pittsburg County, Oklahoma, United States.

[4] The community was named for Dr. Charles Hartshorne, a wealthy investor from Philadelphia, Pennsylvania, who was attracted by the potential profits offered by coal deposits in the area.

[7] At the time of its founding, Hartshorne was located in Gaines County, a part of the Moshulatubbee District of the Choctaw Nation.

The Wister - South McAlester line was completed in 1900, and also linked to Wilburton, Alderson and Hartshorne.

[6] The Holy Rosary Church, complete with a rectory, a convent, and a parochial school, was built in 1895 by Russian and other Eastern European immigrants.

The Saints Cyril and Methodius Russian Orthodox Greek Catholic Church, remains a landmark.

Completed in 1916, it replaced an earlier 1897 version that immigrants from Russia and other eastern European countries constructed.

Cyril Methodius Orthodox Church, Inc. [a] On March 20, 2016, a man named Bill Melancon filed a quitclaim deed in the Pittsburg County Clerk's office, transferring ownership of the property to Melancon.

A group of church members first learned about the alleged sale soon afterward, when they found strangers on and inside the property.

2 miles (3.2 km) northeast of Hartshorne is Jones Academy, a public boarding school for Native Americans with proof of their tribal heritage.

Many tribal students come from the Choctaw Nation, whose territory encompasses Pittsburg County.

[12] The previous mayor had resigned his position after serving less than five months of his four-year term, citing personal reasons.