
The Anarchist Black Cross (ABC), formerly the Anarchist Red Cross, is an anarchist support organization. The group is notable for its efforts at providing prisoners with political literature, but it also organizes material and legal support for class struggle prisoners worldwide. It commonly contrasts itself with Amnesty International, which is concerned mainly with prisoners of conscience and refuses to defend those accused of encouraging violence. The ABC openly supports those who have committed illegal activity in furtherance of revolutionary aims that anarchists accept as legitimate.

The Angolite is the inmate-edited and published magazine of the Louisiana State Penitentiary (Angola) in West Feliciana Parish, Louisiana.

Bangladesh Jail is a law enforcement agency responsible for the management and security of jails Bangladesh and is located in Dhaka, Bangladesh. Inspector General of Prison Brigadier General Iftekhair Uddin is head of the force.

Black and Pink is a United States prison abolitionist organization supporting LGBTQ and HIV-positive prisoners. The group organizes a pen pal program, distributes a prisoner-written newspaper to its incarcerated members, provides court accompaniment, and educates people on their rights.

Books to Prisoners is an umbrella term for several projects and organizations that mail free reading material to prison inmates.

Critical Resistance is a U.S. based organization that works to build a mass movement to dismantle what it calls the prison-industrial complex (PIC). Critical Resistance's national office is in Oakland, California, with three additional chapters in New York City, Los Angeles, and Portland, Oregon.

Frances Crook OBE is the Chief Executive of the Howard League for Penal Reform, the oldest penal reform charity in the United Kingdom.

Etxerat is an association of family members of people who have been imprisoned or exiled because of their activity in support of the Basque National Liberation Movement. Most of those prisoners and exiles are members, or former members, of the Basque armed terrorist organization ETA. Others were not members of ETA but have been jailed for collaborating with it, or have been convicted of other crimes such as belonging to illegal organizations like SEGI or Gestoras pro Amnistía, belonging to or trying to rebuild banned political parties such as Batasuna and Askatasuna, participating in Kale borroka, or for the "public glorification of terrorism". Etxerat's primary activities are to support those family members, and to campaign to defend the rights of their imprisoned and exiled relatives.

The Exodus Transitional Community is a non-profit organization that provides support services to men and women who are in transition from incarceration to full-integration into their communities. It helps these individuals build stable lives by promoting their social and economic well-being so as to break the cycle of recidivism.

Federal Prison Industries, Inc. (FPI), doing business as UNICOR since 1977, is a wholly owned United States government corporation created in 1934 as a prison labor program for inmates within the Federal Bureau of Prisons, and a component of the Department of Justice. It is headquartered in Washington, D.C.

Global Tel Link (GTL), formerly known as Global Telcoin, Inc. and Global Tel*Link Corporation, is a Reston, Virginia-based telecommunications company, founded in 1989, that provides Inmate Calling Service (ICS) through "integrated information technology solutions" for correctional facilities which includes inmates payment and deposit, facility management, and visitation solutions. The company's CEO is Deb Alderson. In 2020, GTL delivered 4.1 billion call minutes to incarcerated individuals and their families.

Justice Action is a not-for-profit community organisation based in Sydney, Australia. Justice Action focuses on abuses of authority in the criminal justice and mental health systems in Australia. Founded in 1979 as Prisoner Action, Justice Action is independent of the Australian government and is funded by voluntary donations and the work of the social enterprise, Breakout Media Communications. Justice Action's coordinator is Brett Collins, an ex-prisoner who began with the organisation in 1979 as co-founder. Alongside Collins, Justice Action is run by a team of interns who are university students in law and other degrees.

Koestler Arts is a charity which helps ex-offenders, secure patients and detainees in the UK to express themselves creatively. It promotes the arts in prisons, secure hospitals, immigration centres and in the community, encouraging creativity and the acquisition of new skills as a means to rehabilitation. The Koestler awards were founded in 1962 and the organisation became a charitable trust in 1969 following a bequest from the British-Hungarian author, Arthur Koestler.

Thomas Mott Osborne was an American prison administrator, prison reformer, industrialist and New York State political reformer. In an assessment of Osborne's life, a New York Times book reviewer wrote: "His career as a penologist was short, but in the interval of the few years he served he succeeded in revolutionizing American prison reform, if not always in fact, then in awakening responsibility.... He was made of the spectacular stuff of martyrs, to many people perhaps ridiculous, but to those whose lives his theories most closely touched, inspiring and often godlike."

National Academy for Prisons Administration (NAPA) formerly known as Central Jail Staff Training Institute (CJSTI) is a Federal Government's training institute for prison staff of all four provinces of Pakistan. It operates under Ministry of Interior, Government of Pakistan. The Academy is situated on Ferozepur Road in Lahore, Pakistan and is adjacent to District Jail Lahore.

The New Afrikan Black Panther Party (NABPP) is a Black Power and Maoist organization in the United States, largely based in prison and referred to as the New Afrikan Black Panther Party – Prison Chapter (NABPP-PC). The party is built as a modern-day continuation of the Black Panther Party prison chapter developed by George Jackson and W. L. Nolen.

The November Coalition is a non-profit grassroots organization, founded in 1997, which fights against the War on Drugs and for the rights of the prisoners incarcerated as the effect of that war. It publishes a bulletin called Razor Wire.

The Prison Radio Association (PRA) is a British prison-based charity that operates National Prison Radio, a radio station which broadcasts programmes made by and for inmates in over 100 prisons in the United Kingdom and is the world's first national radio station of its kind.

Charles E. Samuels Jr. is the 8th and former director of the United States Federal Bureau of Prisons, and the first African-American to be appointed to that post. He is a graduate of the University of Alabama at Birmingham, where he received his B.S. in Criminal Justice in 1987 and in 2012 received the school's Distinguished Alumni Achievement Award. As director, he was responsible for the oversight and management of the Bureau of Prisons, which employs more than 39,000 staff and confines over 200,000 inmates under jurisdiction of the agency. As a career public administrator, he was appointed director of the federal agency on December 21, 2011 by Attorney General Eric Holder, and is the eighth director since the BOP's establishment in 1930.

Scared Straight! is a 1978 American documentary directed by Arnold Shapiro. Narrated by Peter Falk, the subject of the documentary is a group of juvenile delinquents and their three-hour session with actual convicts. Filmed at Rahway State Prison, a group of inmates known as the "lifers" berate, scream at, and terrify the young offenders in an attempt to "scare them straight", so that those teenagers will avoid prison life.

WriteAPrisoner.com is an online Florida-based business. The business's goal is to reduce recidivism through a variety of methods that include positive correspondence with pen-pals on the outside, educational opportunities, job placement avenues, resource guides, scholarships for children impacted by crime, and advocacy. The site began primarily as a place to post pen-pal profiles and requests for legal assistance for inmates and has evolved to take a more comprehensive approach to addressing the challenges in the life of an inmate.

The Youth Justice Board, for England and Wales (YJB) is a non-departmental public body created by the Crime and Disorder Act 1998 to oversee the youth justice system for England and Wales. It is sponsored by the Ministry of Justice, and its Board members are appointed by the Secretary of State for Justice. It also receives funding from the Home Office and the Department for Education. In November 2011 the government dropped plans, contained in the Public Bodies Bill, to abolish the Youth Justice Board.