October 2021 Tokyo attack

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October 2021 Tokyo attack

Quality:

October 2021 Tokyo attack - 2021 stabbing attacks committed on a train in Tokyo. Article “October 2021 Tokyo attack” in English Wikipedia has 34.3 points for quality (as of July 1, 2026). The article contains 21 references and 6 sections. The article also contains templates indicating quality issues, therefore its score was reduced by 1.81 points.

This article has the best quality in Chinese Wikipedia. However, the most popular language version of this article is Japanese.

In June 2026 the article “October 2021 Tokyo attack” was edited by 1 authors in English Wikipedia and written by 2 authors in all languages.

Since the creation of article “October 2021 Tokyo attack”, its content was written by 50 registered users of English Wikipedia and edited by 196 registered Wikipedia users in all languages.

The article is cited 33 times in English Wikipedia and cited 96 times in all languages.

The highest Authors Interest rank from 2001:

  • Local (English): #1016 in November 2021
  • Global: #479 in November 2021

The highest popularity rank from 2008:

  • Local (English): #73669 in November 2021
  • Global: #28342 in November 2021

There are 10 language versions for this article in the WikiRank database (of the considered 55 Wikipedia language editions).

The quality and popularity assessment was based on Wikipédia dumps from July 1, 2026 (including revision history and pageviews for previous years).

The table below shows the language versions of the article with the highest quality.

Languages with the highest quality

#LanguageQuality gradeQuality score
1Chinese (zh)
京王線襲擊事件
50.2395
2Malay (ms)
Serangan Tokyo Oktober 2021
41.8133
3Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
35.536
4English (en)
October 2021 Tokyo attack
34.299
5Japanese (ja)
京王線刺傷事件
33.6248
6French (fr)
Attentat du 31 octobre 2021 à Tokyo
31.4083
7Indonesian (id)
Serangan Tokyo 2021
31.3427
8Spanish (es)
Ataque en la línea Keiō de 2021
26.7023
9Korean (ko)
게이오선 칼부림 사건
22.6964
10Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
8.066
More...

The following table shows the most popular language versions of the article.

Most popular in all the time

The most popular language versions of the article "October 2021 Tokyo attack" in all the time
#LanguagePopularity awardRelative popularity
1Japanese (ja)
京王線刺傷事件
557 744
2English (en)
October 2021 Tokyo attack
114 769
3Chinese (zh)
京王線襲擊事件
44 048
4Spanish (es)
Ataque en la línea Keiō de 2021
4 324
5French (fr)
Attentat du 31 octobre 2021 à Tokyo
2 615
6Korean (ko)
게이오선 칼부림 사건
2 327
7Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
875
8Indonesian (id)
Serangan Tokyo 2021
608
9Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
516
10Malay (ms)
Serangan Tokyo Oktober 2021
298
More...

The following table shows the language versions of the article with the highest popularity in the last month.

Most popular in June 2026

The most popular language versions of the article "October 2021 Tokyo attack" in June 2026
#LanguagePopularity awardRelative popularity
1Japanese (ja)
京王線刺傷事件
6 461
2English (en)
October 2021 Tokyo attack
1 257
3Chinese (zh)
京王線襲擊事件
480
4French (fr)
Attentat du 31 octobre 2021 à Tokyo
58
5Spanish (es)
Ataque en la línea Keiō de 2021
40
6Indonesian (id)
Serangan Tokyo 2021
10
7Korean (ko)
게이오선 칼부림 사건
10
8Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
8
9Malay (ms)
Serangan Tokyo Oktober 2021
3
10Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
0
More...

The following table shows the language versions of the article with the highest Authors’ Interest.

The highest AI

Language versions of the article "October 2021 Tokyo attack" with the highest Authors Interest (number of authors). Only registered Wikipedia users were taken into account.
#LanguageAI awardRelative AI
1Japanese (ja)
京王線刺傷事件
83
2English (en)
October 2021 Tokyo attack
50
3Chinese (zh)
京王線襲擊事件
29
4French (fr)
Attentat du 31 octobre 2021 à Tokyo
14
5Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
6
6Spanish (es)
Ataque en la línea Keiō de 2021
5
7Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
3
8Korean (ko)
게이오선 칼부림 사건
3
9Indonesian (id)
Serangan Tokyo 2021
2
10Malay (ms)
Serangan Tokyo Oktober 2021
1
More...

The following table shows the language versions of the article with the highest Authors’ Interest in the last month.

The highest AI in June 2026

Language versions of the article "October 2021 Tokyo attack" with the highest AI in June 2026
#LanguageAI awardRelative AI
1English (en)
October 2021 Tokyo attack
1
2French (fr)
Attentat du 31 octobre 2021 à Tokyo
1
3Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
0
4Spanish (es)
Ataque en la línea Keiō de 2021
0
5Indonesian (id)
Serangan Tokyo 2021
0
6Japanese (ja)
京王線刺傷事件
0
7Korean (ko)
게이오선 칼부림 사건
0
8Malay (ms)
Serangan Tokyo Oktober 2021
0
9Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
0
10Chinese (zh)
京王線襲擊事件
0
More...

The following table shows the language versions of the article with the highest number of citations.

The highest CI

Language versions of the article "October 2021 Tokyo attack" with the highest Citation Index (CI)
#LanguageCI awardRelative CI
1Japanese (ja)
京王線刺傷事件
34
2English (en)
October 2021 Tokyo attack
33
3Chinese (zh)
京王線襲擊事件
20
4French (fr)
Attentat du 31 octobre 2021 à Tokyo
3
5Indonesian (id)
Serangan Tokyo 2021
2
6Malay (ms)
Serangan Tokyo Oktober 2021
2
7Spanish (es)
Ataque en la línea Keiō de 2021
1
8Thai (th)
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
1
9Arabic (ar)
هجوم طوكيو (أكتوبر 2021)
0
10Korean (ko)
게이오선 칼부림 사건
0
More...

Scores

Estimated value for Wikipedia:
English:
Global:
Popularity in June 2026:
English:
Global:
Popularity in all years:
English:
Global:
Authors in June 2026:
English:
Global:
Registered authors in all years:
English:
Global:
Citations:
English:
Global:

Quality measures

Interwikis

#LanguageValue
arArabic
هجوم طوكيو (أكتوبر 2021)
enEnglish
October 2021 Tokyo attack
esSpanish
Ataque en la línea Keiō de 2021
frFrench
Attentat du 31 octobre 2021 à Tokyo
idIndonesian
Serangan Tokyo 2021
jaJapanese
京王線刺傷事件
koKorean
게이오선 칼부림 사건
msMalay
Serangan Tokyo Oktober 2021
thThai
การโจมตีโตเกียว เดือนตุลาคม พ.ศ. 2564
zhChinese
京王線襲擊事件

Popularity rank trends

Best Rank English:
#73669
11.2021
Global:
#28342
11.2021

AI rank trends

Best Rank English:
#1016
11.2021
Global:
#479
11.2021

Local AI rank history

Global AI rank history

Languages comparison

Important global interconnections (July 2025 – June 2026)

Wikipedia readers most often find their way to information on October 2021 Tokyo attack from Wikipedia articles about 2021 Tokyo stabbings, Tokyo subway sarin attack, Mamoru Takuma, Muteki no Hito and Murder–suicide. Whereas reading the article about October 2021 Tokyo attack people most often go to Wikipedia articles on 2021 Tokyo stabbings, Toshie Ikeda, Keio 7000 series, 2005 Tokaido Shinkansen arson-suicide and Kokuryō Station.

Cumulative results of quality and popularity of the Wikipedia article

List of Wikipedia articles in different languages (starting with the most popular):

News from 16 March 2026

On 16 March 2026 in multilingual Wikipedia, Internet users most often read articles on the following topics: 98th Academy Awards, Michael B. Jordan, Sinners, Jessie Buckley, Paul Thomas Anderson, Sean Penn, One Battle After Another, Amy Madigan, Hamnet, Timothée Chalamet.

In English Wikipedia the most popular articles on that day were: 98th Academy Awards, Michael B. Jordan, Paul Thomas Anderson, Jessie Buckley, Sinners (2025 film), Amy Madigan, Autumn Durald Arkapaw, Maya Rudolph, Sean Penn, Academy Awards.

About WikiRank

The WikiRank project is intended for automatic relative evaluation of the articles in the various language versions of Wikipedia. At the moment the service allows to compare over 50 million Wikipedia articles in 55 languages. Quality scores of articles are based on Wikipedia dumps from July, 2026. When calculating current popularity and AI of articles data from June 2026 was taken into account. For historical values of popularity and AI WikiRank used data from 2001 to 2026... More information