“Cohen” (Hebrew: כֹּהֵן, kōhēn, “priest”) is a common Jewish surname. “Cohencidence” (Cohen + coincidence) originally was used when discussing someone named Cohen. “It’s quite a Cohen-cidence that the unassuming family, living at 604 State street, should get its name in the newspapers so much” was printed in The Star-Independent (Harrisburg, PA) on July 24, 1909.
   
Since the early 2000s, the term “cohencidence” has involved a coincidence about Jews (who are not necessarily named “Cohen”). Pointing out that many industries are Jewish-owned (such as banking or the Hollywood entertainment industry) has been a frequent use of “cohencidence.”
   
“Cohencidence - A Jewish coincidence” was posted on the newsgroup soc.culture.jewish on May 2, 2009. “Both Twitter and Facebook Owned by jews Cohencidence?” was posted on Twitter by Jason on October 2, 2016. “#Cohencidence’ Hashtag Trends on Twitter Thanks to David Duke, Assorted Jew Haters” by Daniel J. Solomon was printed in the Forward on November 8, 2016. “Cohencidence A play on ‘coincidence’ and the common Ashkenazi Jewish surname Cohen. Used to imply that Jews are behind certain events or movements that are purported to be random or organic” was entered in the Urban Dictionary on October 28, 2018.
   
         
Wikipedia: Cohen (surname)
Cohen (Hebrew: כֹּהֵן, kōhēn, “priest”) is a surname of Jewish, Samaritan and biblical origins (see: Kohen). It is a very common Jewish surname (the most common in Israel), and the following information discusses only that origin. Of the four Samaritan last names that exist in the modern day, Cohen is one. Many Jewish immigrants entering the United States or United Kingdom changed their name from Cohen to Cowan (sometimes spelled “Cowen”), as Cowan was a Scottish name.
 
Wiktionary: cohencidence
Etymology
Blend of Cohen

coincidence
Noun
cohencidence (plural cohencidences)
1. (slang, derogatory, humorous, somewhat offensive, sarcastic) Something that seems like a coincidence but is actually the work of conspiratorial Jewish groups.
       
Newspapers.com
24 July 1909, The Star-Independent (Harrisburg, PA), pg. 1, col. 5:
DAISY, A COW, STILL
OWNED BY COHENS
(...)
It’s quite a Cohen-cidence that the unassuming family, living at 604 State street, should get its name in the newspapers so much, especially when it wasn’t courting publicity.
   
Newspapers.com
5 September 1920, The Spokesman-Review (Spokane, WA), pt. 3, pg. 9, col. 4:
Those Wags.
“Most extraordinary! I was just this moment thinking of Cohen and here he comes.”
 
“Pooh! A mere Cohencidence.”—Boston Transcript.
 
Google Books
6 December 1923, Life magazine, pg. 64, col. 2:
Only a Cohencidence
(Isaac Abraham Jacob Cohen is asked if he is Jewish.—ed.)
       
Google Groups: soc.culture.jewish
Name the jew.
Nomen Nescio
May 2, 2009, 9:40:02 PM
(...)
Cohencidence - A Jewish coincidence
 
Twitter
Ian Marshall
@Two_Tents
I used to work with two Jewish guys who had the same surname - it was a cohencidence.
12:12 PM · Aug 18, 2013·Twitter for BlackBerry®
         
Twitter
Βαβελλάς
@panais_koutelos
First we take Manhattan then we take Berlin… #cohencidence
(This is a lyric from a song by Leonard Cohen.—ed.)
3:30 PM · Feb 4, 2015·Twitter for Android
 
Twitter
Fashy Pipe Wrench
@ScythianArrows
Replying to @gooodwinmj @AngloVonTrapp and @LBC
Is it not a Cohencidence that Jews are overrepresented in their support of those things?
9:40 AM · Jun 18, 2016·Twitter for Android
 
Twitter
𝔉𝔲𝔫𝔨𝔩𝔢𝔰𝔱𝔢𝔦𝔫
@funkIestein
Replying to @yalocalproducer and @PartyAlchemist
All of you Jewish supremacy deniers are fucking retarded. Cohencidence? Go watch some more MTV.
6:01 PM · Aug 11, 2016·Twitter Web Client
     
Twitter
Jason
@lancer1236
Replying to @JaredWyand @cristinalaila1 and @ThomasBernpaine
Both Twitter and Facebook Owned by jews Cohencidence?
11:15 PM · Oct 2, 2016·Twitter Web Client
     
Twitter
(((dovidduke)))
@dovidduke
And (((Chris Wallace))) of @FoxNewsSunday is also a MOT. #Cohencidence #Naches #MakeJewsGreatAgain @jdforward
Quote Tweet
Helen Chernikoff
@ChernikoffHelen
·
Oct 19, 2016
A young #Holocaust survivor — and #immigrant — had the original idea for the modern presidential #debate http://jd.fo/OxI6
11:33 AM · Oct 20, 2016·Twitter Web Client
 
Forward
‘#Cohencidence’ Hashtag Trends on Twitter Thanks to David Duke, Assorted Jew Haters
By Daniel J. Solomon
November 8, 2016
The Jew hatred that has become such a striking feature of the internet made its first major breakthrough in early June. That was when users realized that neo-Nazis had developed a way to mark the presence of Jews on social media by enclosing their names in a set of triple parentheses, also known as the echo.
 
More recently, the ‘Cohencidence’ hashtag has been trending: It helps identify instances of Jewish power and root them in the notion that Jews work together, surreptitiously and with diabolical cleverness, to undermine the broader society in which they live.
   
Twitter
Shlomo Shoahstein
@shoahtime1488
Replying to @MelissaJaneSays
The Young Turks was a jewish movement. Most of the central figures were jews. Just another cohencidence.
10:20 AM · Dec 7, 2016·Twitter Web Client
 
Urban Dictionary
Cohencidence
A play on ‘coincidence’ and the common Ashkenazi Jewish surname Cohen. Used to imply that Jews are behind certain events or movements that are purported to be random or organic. Similar to ((())).
“Man, it’s crazy that an attempted serial bombing and a mass shooting happened right before the midterms…”
“Yeah, it must be pure cohencidence.”
by strangebrewn October 28, 2018
     
Twitter
Butt Goy
@buttgoy
Replying to @revelation17_14 and @getongab
Wrong!
There is near-universal support from both the GOP & Democrats in Congress for a Jewish ethnostate (Israel).
Jews are less than 2% of the U.S. population, yet they’re vastly overrepresented among those corrupting members of Congress. Cohencidence?
https://jpost.com/US-Elections/US-Jews-contribute-half-of-all-donations-to-the-Democratic-party-468774
1:36 AM · Dec 10, 2019·Twitter Web Client
 
Twitter     
Ligia
@melaniariz
What a cohencidence!!! They’re all Jews.
Quote Tweet
ThirdEyeOfTheStorm
@LizardB01935413
·
Mar 28, 2020
Bankers and banker’s helpers
4:55 AM · Mar 29, 2020·Twitter for iPad
 
Twitter 
عمر بن محمد
@OmarBinMohamma5
Owners and CEO’s of Comcast, CNN, NBC, the Patriots, Goldman Sachs, Bloomberg, the Falcons, the Washington Redskins, the Home Depot are Zionist Jews! Cohencidence?
8:55 PM · Jul 13, 2020·Twitter for iPhone
 
Twitter
BACKFROMTHEDEADALIVE
@JeetsCantHoldMe
a gaggle of geese
a murder of crows
a cohencidence of jews
(pic rel—when you’re getting bantz from 2000yrs ago that sound like modern critiques, maybe this one time it ISN’T everyone else’s fault?)
9:02 PM · Nov 13, 2022·Twitter Web App
 
Twitter
Water
@Typical_Con
Replying to @samwinch @KingLateef_7th and @FeldmanAdam
Yeah, I’m sure 100% of Trump and Biden’s offspring all being married to Jews is just a cohencidence that’s the result of hard work and merit…
9:11 PM · Nov 13, 2022·Twitter Web App