Maximum security prisons and supermax prisons are grades of high security level used by prison systems in various countries, which pose a higher level of security to prevent prisoners from escaping and/or doing harm to other inmates or security guards.

• For the United States, see Incarceration in the United States § Security levels
• For Canada, see Correctional Service of Canada § Security classification of offenders
• For other prison systems, see Prison § Security levels

• Maximum Security (disambiguation)

This article includes a list of related items that share the same name (or similar names).
If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.