| Ħal Far Immigration Reception Centre (Hal Far) | Malta | Ħal Far | In use (2023) |
| Zuwarah (Zwara) Detention Centre (زوارة) | Libya | Zuwarah | In use (2024) |
| Zurich Airport Prison (Flughafengefängnis Abteilung Ausländerrechtliche Administrativhaft) | Switzerland | Zurich Airport, Canton Zurich | In use (2025) |
| Zug Cantonal Prison (Kantonale Strafanstalt Zug / Penitentiary of Zug) | Switzerland | Canton Zug | In use (2023) |
| Zlitan (Zliten) Detention Centre (زليتن) | Libya | Zlitan | In use (2023) |
| Zeist Detention Centre | Netherlands | Zeist, Ultrecht | In use (2023) |
| Zahleh Men's Prison | Lebanon | al-Madina al-Sina'ieh quarter in Zahleh district, Beqaa Governorate | In use (2024) |
| Zagreb International Airport Transit Zone Facility | Croatia | Zagreb, International Airport | In use (2024) |
| Zacatecas Estacion Migratoria | Mexico | Zacatecas, Zacatecas | In use (2024) |
| Yuba County Jail | United States | Marysville, California | In use (2023) |
| York County Prison | United States | York, Pennsylvania | In use (2023) |
| Yongah Hill Immigration Detention Centre | Australia | Northam, WA | In use (2023) |
| Yokohama Regional Immigration Bureau Detention Houses | Japan | Yokohama | In use (2024) |
| Yilan Detention centre | Taiwan, Province of China | Yilan County | In use (2024) |
| Yevlakh Detention Centre for Illegal Migrants | Azerbaijan | Yevlakh | In use (2020) |
| Yeosu Immigration Office Detention Facility | Republic of Korea (South Korea) | Jeounranam-do | In use (2024) |
| Yegoryevsk (Moscow Oblast) Center for Temporary Detention of Foreign Nationals (ЦВСИГ по ГО Егорьевск) | Russian Federation | Yegoryevsky District, Moscow Oblast | In use (2021) |
| Yarl's Wood Immigration Removal Centre (IRC) | United Kingdom | Clapham, Bedfordshire | In use (2023) |
| Yahalom Detention Centre | Israel | Tel Aviv | In use (2021) |
| Xanthi pre-removal detention centre | Greece | Xanthi, Thrace | In use (2023) |
| Wyatt Detention Center (Central Falls) | United States | Central Falls, Rhode Island | In use (2023) |
| Women’s Foreigner’s Detention Centre/WFDC | India | Imphal, Manipur | In use (2024) |
| Women's Correctional Centre | Canada | Headingley, Manitoba | In use (2020) |
| Winnipeg Remand Centre | Canada | Winnipeg, Manitoba | In use (2020) |
| Winn Parish Correctional Center | United States | Winnfield, Louisiana | In use (2023) |
| Willacy County Regional Detention Facility (CI Willacy Country) | United States | Raymondville, Texas | In use (2023) |
| Wiener Neustadt PAZ | Austria | Vienna | In use (2023) |
| Whitfield County Jail | United States | Dalton, Georgia | In use (2022) |
| Wheatfield Prison | Ireland | Clondalkin, Dublin | In use (2019) |
| Westville Correctional Centre | South Africa | Durban, Kwazulu-Natal Province | In use (2023) |
| West Texas Detention Facility | United States | Sierra Blanca, Texas | In use (2023) |
| West Kowloon Station of the Guangzhou-Shenzhen-Hong Kong Express Rail Link Detention Quarters | Hong Kong (China) | Hong Kong SAR | In use (2023) |
| Wels PAZ | Austria | Wels | In use (2023) |
| Welisara Detention Centre | Sri Lanka | Welisara | In use (2023) |
| Webb County Detention Center (CCA) | United States | Laredo, TX | In use (2023) |
| Wauwilermoos Correctional Facility (Justizvollzugsanstalt Wauwilermoos) | Switzerland | Egolzwil, Canton Lucerne | In use (2023) |
| Washoe County Jail | United States | Reno, Nevada | In use (2023) |
| Washington County Jail / Purgatory Correctional Facility | United States | Hurricane, Utah | In use (2023) |
| Washington County Detention Center | United States | Fayetteville, Arkansas | In use (2022) |
| Warsaw airport holding facility | Poland | Warsaw International Airport, Terminal 2, transit area, Poland | In use (2023) |
| Wakulla County Facility | United States | Crawfordville, Florida | In use (2023) |
| Vranidoll Detention Centre for Foreigners | Kosovo | Vranidoll | In use (2020) |
| Vordernberg Detention Centre | Austria | Styria | In use (2023) |
| Volyn Temporary Stay for Foreigners and Stateless Persons (Volyn PTPI) | Ukraine | Zhuravychi, Volyn oblast | In use (2023) |
| Vilnius International Airport | Lithuania | Vilnius | In use (2024) |
| Villawood Immigration Detention Centre | Australia | Villawood, Sydney, NSW | In use (2023) |
| Villahermosa Estacion Migratoria | Mexico | Villahermosa, Tabasco | In use (2024) |
| Villach PAZ | Austria | Villach | In use (2023) |
| Vienna Schwechat Airport (transit zone) | Austria | Vienna, Schwechat | In use (2023) |
| Vienna Rossauer Lände PAZ | Austria | Vienna | In use (2023) |
| Vienna Hernalser Gürtel PAZ | Austria | Vienna | In use (2023) |
| Vienna Family Detention Facility Zinnergasse | Austria | Vienna | In use (2023) |
| Vidyasagar Balika Bhawan | India | Midnapore, West Bengal | In use (2024) |
| Venezia Airport Police Border Office | Italy | Venice, Italy | In use (2022) |
| Van Removal Centre (Kurubaş) | Turkey | Van | In use (2024) |
| Vaduz Prison | Liechtenstein | Vaduz, Liechtenstein | In use (2016) |
| Unidade Habitacional de Santo António (CIT-UHSA)) | Portugal | Porto | In use (2023) |
| Um Al-Loulou Reform and Rehabilitation Centre | Jordan | Amman | In use (2020) |
| Ulsan Immigration Office Detention Facility | Republic of Korea (South Korea) | Ulsan | In use (2024) |
| Tyre's Prison | Lebanon | Tyr district. South Governorate (al-Janoub) | In use (2024) |
| Tuxtla Gutierrez Estacion Migratoria | Mexico | Tuxtla Gutierrez, Chiapas | In use (2024) |
| Tunis Carthage Airport Transit Zone | Tunisia | Tunis | In use (2020) |
| Tuilière Prison (Prison de la Tuilière) | Switzerland | Lonay, Vaud Canton | In use (2023) |
| Tuen Mun Children and Juvenile Home | Hong Kong (China) | Tuen Mun, Hong Kong | In use (2024) |
| Troyes - Local de rétention administrative | France | Troyes, France | In use (2022) |
| Triq al Seka (Triq al Sika / Tariq al-Sikkah) Detention Center | Libya | Tripoli | In use (2024) |
| Trilj Transit Detention Centre | Croatia | Trilj, Dalmatia | In use (2024) |
| Trapani/Trapani-Milo Pre-Removal Centre CPR (previously Centro di Identificazione ed Espulsione / Hotspot) | Italy | Trapani, Milo, Sicily | In use (2024) |
| Trandum National Police Immigration Detention Centre (Trandum Utlendingsinternat) | Norway | Trandum (near Gardermoen International Airport) | In use (2024) |
| Trại Giam Long Hòa (Long Hoa Prison) | Viet Nam | Long An, Vietnam | In use (2023) |
| Tovarnik Transit Detention Centre | Croatia | Tovarnik, Vukovar-Syrmia | In use (2024) |
| Tours Local de Rétention Administrative | France | Tours, Indre-et-Loire | In use (2022) |
| Tourcoing - Local de Rétention administrative | France | Tourcoing, France | In use (2023) |
| Toulouse-Cornebarrieu Centre de Rétention Administrative | France | Toulouse-Cornebarrieu, Haute-Garonne | In use (2023) |
| Torrance County Detention Facility | United States | Estancia, New Mexico | In use (2023) |
| Tokyo Immigration Bureau Detention House | Japan | Tokyo | In use (2024) |
| Tobruk (Tobruch) Detention Center (طبرق) | Libya | Tobruk, Butnan Municipality | In use (2023) |
| Tinsley House Immigration Removal Centre (IRC) | United Kingdom | Gatwick Airport,
Gatwick,
West Sussex | In use (2023) |
| Timișoara accommodation centre for asylum seekers | Romania | Timișoara, Timis | In use (2023) |
| Tijuana Estacion Migratoria | Mexico | Tijuana, Baja California | In use (2024) |
| Tihar Prison Complex | India | New Delhi | In use (2021) |
| Thun Regional Prison (Regionalgefängnis Thun) | Switzerland | Thun, Berne Canton | In use (2023) |
| Thessaloniki Metagogon (Transfer) Centre | Greece | Thessaloniki, Central Macedonia | In use (2024) |
| Thessaloniki Aliens Police Directorate holding facility | Greece | Thessaloniki, Central Macedonia | In use (2023) |
| The Training Unit, Glengariff Parade | Ireland | Glengarriff Parade, Dublin | In use (2019) |
| The Pas Correctional Centre | Canada | The Pas, Manitoba | In use (2020) |
| The Midlands Prison | Ireland | Portlaoise, Laois | In use (2019) |
| Tezpur Transit Camp (cum Central Jail) | India | Tezpur, Assam | In use (2024) |
| TEST AFGHANISTAN | Afghanistan | KABUL | In use (2025) |
| Tenosique Estacion Migratoria | Mexico | Tenosique, Tabasco | In use (2020) |
| Teller County Detention Center (Prev. Teller County Jail) | United States | Divide, Colorado | In use (2023) |
| Tebnine Prison | Lebanon | Tebnine, South Lebanon (تبنين - لبنان الجنوبي) | In use (2024) |
| Tbilisi Temporary Accommodation Centre (TAC) | Georgia | Tbilisi, Varketili District | In use (2021) |
| Tawau Temporary Immigration Depot | Malaysia | Sabah | In use (2021) |
| Tarn Taran Detention Centre (within Goindwal Sahib Central Jail) | India | Goindwal, Tarn Taran District, Punjab | In use (2024) |
| Taranto Hotspot | Italy | Taranto, Puglia | In use (2023) |
| Tapachula Estacion Migratoria (Siglo XXI) | Mexico | Tapachula, Chiapas | In use (2024) |
| Tangier Central Police Station | Morocco | Tangier | In use (2021) |
| Tan Merah Prison | Singapore | Singapore | In use (2020) |
| Tampico Estacion Migratoria | Mexico | Tampico, Tamaulipas | In use (2024) |
| Tamanrasset Camp | Algeria | Tamanrasset | In use (2019) |
| Tallahatchie County Correctional Facility | United States | Tutwiler, Mississippi | In use (2023) |
| Talha Detention Centre (Deporation Centre, Detention Department) | Kuwait | Jleeb Al Shuyoukh, Al Farwaniya | In use (2023) |
| Takamatsu Regional Immigration Bureau Detention House | Japan | Takamatsu City, Kagawa | In use (2023) |
| Tajura (Tajoura) Detention Centre | Libya | Tajura (Tajoura), North West/ Mediterranean Coast | In use (2024) |
| Taipei Detention centre | Taiwan, Province of China | New Taipei City | In use (2024) |
| Taif Migrant Detention Center | Saudi Arabia | Taif, Makkah | In use (2024) |
| Tai Tam Gap Correctional Institution | Hong Kong (China) | Hong Kong | In use (2024) |
| T. Don Hutto Residential Center | United States | Taylor, Texas | In use (2022) |
| Syntagma Police Station | Greece | Athens, Attica | In use (2021) |
| Swinderby Short-Term Holding Facility (STHF) | United Kingdom | Swinderby, Lincoln | In use (2023) |
| Sweihan Immigration jail Abu Dhabi (Violators and Foreigners Follow-up Department, Abu Dhabi) | United Arab Emirates | Sweihan, Abu Dhabi | In use (2024) |
| Suwon Immigration Office Detention Facility | Republic of Korea (South Korea) | Gyounggi-do | In use (2024) |
| Sunnyside Police Station: South Africa Police Service | South Africa | Sunnyside | In use (2024) |
| Sukanya Home | India | Kolkata, West Bengal | In use (2024) |
| Suffolk County House of Corrections (South Bay) | United States | Boston, Massachusetts | In use (2023) |
| Strasbourg-Geispolsheim Centre de Rétention Administrative | France | Geispolsheim (Strasbourg), Bas-Rhin | In use (2023) |
| Strafford County House of Corrections | United States | Dover, New Hampshire | In use (2023) |
| Stewart Detention Center | United States | Lumpkin, Georgia | In use (2023) |
| Stans Remand and Criminal Prison (Untersuchungs-und Strafgefängnis Stans) | Switzerland | Stans, Canton Nidwald | In use (2023) |
| St. Pölten PAZ | Austria | St. Pölten | In use (2023) |
| St. Joseph Police Station | Dominica | St. Joseph, St. Joseph | In use (2020) |
| St. Clair County Jail (Saint Clair) | United States | Port Huron, Michigan | In use (2023) |
| St Gallen Prison (Gefängnis St. Gallen) | Switzerland | Canton St Gallen | In use (2023) |
| Spuž Centre for Reception of Foreigners Seeking International Protection | Montenegro | Spuž | In use (2020) |
| Southwest Key - Casa el Presidente | United States | Brownsville, Texas | In use (2022) |
| South Texas/Pearsall Hold Room | United States | Pearsall, Texas | In use (2023) |
| South Texas Family Residential Centre | United States | Dilley, Texas | In use (2022) |
| South Texas Detention Complex (formerly Pearsall Immigration Detention Center) | United States | Pearsall, Texas | In use (2022) |
| South Louisiana Detention Center (South Louisiana Correctional Center) | United States | Basile, Louisiana | In use (2023) |
| South Central Regional Jail | United States | Charleston, West Virginia | In use (2022) |
| Soufli Police and Border Guard Station | Greece | Soufli, Evros, Thrace | In use (2020) |
| Soshanguve Police Station | South Africa | Soshanguve | In use (2024) |
| Somcuta Mare accommodation centre for asylum seekers | Romania | Somcuta Mare, Maramureș | In use (2023) |
| Solothurn Detention Centre (Untersuchungsgefängnis Solothurn) | Switzerland | Solothurn | In use (2023) |
| Soissons - Local de rétention administrative | France | Soissons, France | In use (2022) |
| Sohar Deportation Centre | Oman | Sohar | In use (2022) |
| Sofia Busmantsi Detention Centre (Special Home for Temporary Accommodation of Foreigners(SHAF)) | Bulgaria | Sofia | In use (2024) |
| Slum & JJ Vibhag's Ren Baseraa/Baraat Ghar | India | Shahjadabad, New Delhi | In use (2024) |
| Sirte Detention Centre (سرت) | Libya | Sirte | In use (2024) |
| Singkhon Immigration Detention Centre | Thailand | Dan Ban Singkhon, Prachuap Khiri Khan Province | In use (2021) |
| Silchar Transit Camp (cum Central Jail) | India | Silchar, Assam | In use (2024) |
| Shuwaikh Deportation Centre | Kuwait | al-Shuwaikh, west of Kuwait City | In use (2024) |
| Shilayan Home for Girls | India | Murshibad, West Bengal | In use (2024) |
| Sherburne County Jail Services (Prev. Serburne County Facility) | United States | Elk River, Minnesota | In use (2023) |
| Shëngjin Detention Centre Hotspot | Albania | Shëngjin | In use (2025) |
| Shawnee County Department of Corrections (Shawnee County Adult Detention Center) | United States | Topeka, Kansas | In use (2023) |
| Shahhat Detention Center (شحات) | Libya | Shahat | In use (2023) |
| Sewa Sadan, Shahzada Bagh | India | Sarai Rohilla, New Delhi, 110035 | In use (2024) |
| Sète Centre de Rétention Administrative | France | Sète, Hérault | In use (2023) |
