Mack H. Alford Correctional Center (MACC, originally the Stringtown Correctional Center) is an Oklahoma Department of Corrections prison in unincorporated Atoka County, Oklahoma, near Stringtown.

The medium security prison, which opened in 1973, is named after Mack H. Alford, who once served as the prison's warden.

[2] Oklahoma Corrections Industry operates a factory for furniture renovation and sign production at the facility.

[3] On May 14, 1988 inmates rioted while preparing to be transported, taking 8 guards hostage.

The rioters started fires in 3 buildings, causing extensive damage.