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Japan · Tokyo · Katsushika, Tokyo
Tokyo Detention House
DetentionMaximummixedDeath rowUnder capacity (60%)LowHigh
Verified · Data dated
Fresh · 2mo ago
Sources last reviewed on · data-as-of
Data is aggregated from public sources and may be incomplete or out of date. Always verify with primary sources before acting on any figure. See data sources.
For families
How to send mail, money, and visit Tokyo Detention House
Step-by-step guidance using the Japan system — addresses, money services, visit booking, what to bring on your first visit.
Gallery
From Wikimedia Commons (CC-BY-SA where not otherwise stated).
Photo by Kakidai via Wikimedia Commons (CC BY-SA 4.0)
Photo by Nesnad via Wikimedia Commons (CC BY-SA 4.0)
Photo by 赤ç«æ³å¸« via Wikimedia Commons (CC BY-SA 4.0)
Photo by Nesnad via Wikimedia Commons (CC BY-SA 4.0)
Photo by Nesnad via Wikimedia Commons (CC BY-SA 4.0)
Photo by Unknown authorUnknown author via Wikimedia Commons (Public domain)
Photo by Nesnad via Wikimedia Commons (CC BY 4.0)
Photo by Nesnad  This photo was taken with Panasonic Lumix DMC-TZ30 via Wikimedia Commons (CC BY-SA 3.0)
Holds pretrial detainees and death-row prisoners awaiting execution. Executions are carried out on site.
Capacity
3,010
Current population
1,800
Occupancy
60%
Year opened
1971
Operational
Figures from official sources · verified 29 May 2026 · methodology
Facility profile
Population held
mixed
Opened
1971
Region
Tokyo
Security level
Maximum
Death-row facility
Yes
Conditions
Death-row cells are single-occupancy. Death-row prisoners typically learn of execution only the morning it occurs.
Visiting
Visits 15 minutes, weekdays only. Pre-charge detainees may be limited to one visitor at a time; foreign nationals via consulate.
Mailing
Mail screened. Format: ã124-0001 æ±äº¬é½è飾åºå°è 1-35-1 æ±äº¬æç½®æ + name.
Practical info
Foreign consulate visits routed through the facility's foreign liaison desk.
Known issues
UN Human Rights Committee has raised concerns over the daiyÅ kangoku (substitute prison) system and conditions for death-row prisoners.
Notable inmates
- Yusuke Katayama1982 · programmer
- Masami Tsuchiya1965–2018
Masami Tsuchiya (åè°· æ£å®, Tsuchiya Masami; 6 January 1965 â 6 July 2018) was a Japanese convicted terrorist and senior member of Aum Shinrikyo, responsible for the deaths of a combined 19 people and for the production of sarin, VX nerve agent, PCP, and LSD.
- Hiroshi ZÅta1975
- Yukiko Ekida1950 · medical researcher
Carlos Ghosn1954 · business executiveCarlos Ghosn (; French: [kaÊlÉs É¡on]; Arabic: ÙارÙÙس غصÙ, romanized: KÄrlÅ«s Ḡuá¹£n; Lebanese Arabic pronunciation: ['kaËrlos 'É£osˤn], born 9 March 1954) is a businessman and former automotive executive.
Sanpachi TaidÅ1945 · politician
Source: Wikidata + Wikipedia.
Contact & address
Conditions Risk Score
Derived signal — not a judgement. How it's calculated
15/100
Low concern15/100
- Overcrowding
- 0/30
- Oversight reports
- 0/30
- Structural flags
- 10/15
- Death signals
- 5/15
- Conditions text
- 0/10
What the score is responding to:
- · Death-row facility
- · Substantial documented known-issues record
- · In-custody-death signal in sources
This facility scores 15. The national average across 155 scored Japan facilities is 10 — 5 points above national average.
Related facilities
Same country, matched on type + security level where possible.
- Fuchu PrisonFuchu, TokyoHighClass A54% occupancy
- Zi Ming Nu Zi Xue Yuanåæ³å¸
- Jing Gang Xing Wu Suo é岡å¸
- Song Jiang Xing Wu Suo
- Fu Gang Xing Wu Suo å®ç¾çº
- Owada Prison
Compared to other facilities in Japan
154 peersConditions risk scorethis: 15/100 · peers avg: 5/100 (+200%)
Higher risk than 100% of peer facilities in Japan.
Occupancythis: 60% · peers avg: 54% (+12%)
Capacity (beds)this: 3010 · peers avg: 1654 (+82%)
Data completeness
100%How many of our profile fields are populated. We surface this so families and researchers know the limits.
Sources
- MoJ Japan â Tokyo Detention House
- Amnesty International â Japan death penalty
- Amnesty International â country pages — Amnesty International
- Ministry of Justice Japan â corrections — æ³åç
- Wikidata (Q5359497)
- Wikipedia
- Wikimedia Commons
- See /data-sources for our overall methodology.
Cite this page
Under CC-BY-4.0. Include the URL and access date; the site is a living reference and entries can change.
APA
World Prisons. (2026). Tokyo Detention House. Retrieved July 21, 2026, from https://worldprisons.com/prisons/tokyo-detention-house
Chicago
"Tokyo Detention House." World Prisons. Accessed July 21, 2026. https://worldprisons.com/prisons/tokyo-detention-house.
BibTeX
@misc{worldprisons-tokyo-detention-house,
author = {{World Prisons}},
title = {Tokyo Detention House},
year = {2026},
url = {https://worldprisons.com/prisons/tokyo-detention-house},
urldate = {2026-07-21}
}