The Federal Correctional Institution, Allenwood Medium (FCI Allenwood Medium) is a medium-security United States federal prison for male inmates in Gregg Township, Union County, Pennsylvania.

[1] It is part of the Allenwood Federal Correctional Complex (FCC Allenwood) and is operated by the Federal Bureau of Prisons, a division of the United States Department of Justice.

[2] FCC Allenwood is located approximately 75 miles north of Harrisburg, Pennsylvania, the state capital.