An Abundance of Katherines

When it comes to relationships, everyone has a type. Colin Singleton’s type is girls named Katherine. He has dated–and been dumped by–19 Katherines. In the wake of The K-19 Debacle, Colin–an anagram-obsessed washed-up child prodigy–heads out on a road trip with his overweight, Judge Judy- loving friend Hassan. With 10,000 dollars in his pocket and a feral hog on his trail, Colin is on a mission to prove a mathematical theorem he hopes will predict the future of any relationship (and conceivably win the girl). An Abundance of Katherines was a 2007 Michael L. Printz Honor book and a finalist for the Los Angeles Times Book Prize. It was also named one of the books of the year by Booklist, Horn Book, and Kirkus.
If you are fully prepared to be inundated with spoilers, you can learn much, much more about Katherines at the book’s Questions page.

If you would like to read this book in another language, go to the Translations page.

Reviews (Spoiler Alert!)

“Imagine an operating room at the start of a daring but well-rehearsed procedure and you will have something of the atmosphere of ”An Abundance of Katherines”: every detail considered, the action unrolling with grace and inevitability.”

-New York Times Book Review

“Green follows his Printz winning Looking for Alaska (2005) with another sharp, intelligent story. The laugh-out-loud humor ranges from delightfully sophomoric to subtly intellectual.”
-Booklist, Starred Review

“Fully fun, challengingly complex, and entirely entertaining.”
-Kirkus, Starred Review

“Laugh-out-loud funny, this second novel by the author of the Printz winner Looking for Alaska charts a singular coming-of-age American road trip that is at once a satire of and a tribute to its many celebrated predecessors.”
-Horn Book, Starred Review

{ 622 comments… read them below or add one }

Anna Jeery' June 19, 2015 at 1:14 pm

Helloo Jhon Green, I Love you Books <3


Chelsea June 19, 2015 at 4:27 pm

John Green,
I absolutely loved your book An Abundance of Katherines, and I have to say I think it’s my favourite. Many people undermine this book and say that it’s boring but to that, firstly, I would like to say that for me this book was hilarious (Hassan is my spirit animal). Not too many books can make me laugh out loud instead of simply grunting or blowing more air out of my nose than normal, but this one did. Secondly, I could relate to the characters. I haven’t dated a multitude of Katherines or anything, but I related to the ideas of why we exist and what we’re meant to do, and how the future will always be unpredictable, and even the pressure of being looked at as smart and then trying to keep up with that label. By reading this book I guess I sorted a few things out about myself. Clear as mud right?
I just wanted to say thank you for writing such awesome books, you’re truly amazing.


nouran June 19, 2015 at 7:18 pm

I just have 2 question for Mr. John Green question (1) is how did you get the idea to write this nice book ?

maybe this question is dump but what happens to Hassan?


Mujtaba June 20, 2015 at 8:46 am

not only Hassan what happens to everyone. i mean they probably just wouldn’t keep driving. It’s just incomplete still.


nouran June 19, 2015 at 7:25 pm

I actually read all your books and they are really an awesome books and the abuandance of Kathrine is an awesome book that I really liked it I see that the book contains everything its an hilarious book and for me I saw that this is the first book to make lol


Batman Arkham Knight Download June 21, 2015 at 10:07 am

Katherines is my favorite one


Brena Rdrigues June 21, 2015 at 4:35 pm

Livro magnifico. Leio sempre, inumeras vezes e nunca canso de ler


Emily June 22, 2015 at 3:14 pm

Hi! Im planning on reading all of your books.The trouble is I dont know which one is my favorite (ive read tfios,lfa and a abundace of Kathines) and they have all have a place in my heart!


Nate June 24, 2015 at 4:43 pm

I’m looking forward to what you have in the future!


gabby Ilarraza July 3, 2015 at 10:11 pm

I love an abundance of Katherine’s it’s a book that made me Laugh and even though many may think it boring I find it to be a great book


Areeb July 7, 2015 at 12:06 pm

Hey, I live in BANGLADESH. I laughed at the comment in the book, but, still it hurts seeing my country insulted. Anyway, nice book. Not as good as ‘The Fault In Our Stars”, but nice. I liked the math. It helped a lot understanding functions. Thanks for the great read, DO NOT loose the touch.

Rajshahi, Bangladesh


Tayana straughter July 8, 2015 at 2:30 am

To me it is a tie between the fault in our stars and abundance of Katherine’s this book was hilarious and down right perfect in every way but, I do have questions mainly about the ending what happens; Do they marry? Or turn around I would really like to this if you have anytime please, fill free to contact me at my current email address:


Angela July 9, 2015 at 12:20 am

Hello John Green!
I really loved your books and stuff like that…
I just wondered how you were inspired to write such a book all the time, especially the book The Fault in Our Stars<3


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Saaleha July 15, 2015 at 6:35 pm

Ive noticed that many would like to know what happens afterwards in your books and id just like to say that i dont. The incomplete endings are my favourite. I love how all your books end, it always makes me wonder what if Hazel died in two weeks or what if there was a car crash in the end of an abundance of katherines or what if Margo decieded to go back home? But i never answer those questions so in my head it ends the way it ends. Hazel reading Augustus sequel, Hassan, Colin and Lindsy driving on an endless rode and Margo and Q just standing there in the dark, i like these never ending, incomplete endings, it makes me happy. Thank you so much for writting such amazing books that have really changed my life and my view on life.


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Areti July 17, 2015 at 2:49 pm

Mr. Green,
I have read just two of your books but I have to say that I was surprised by your writing.The first book I read was “The fault in our stars” and it was the first time I felt that I could watch everything that happened.The second book I have read and I am reading it again is “Looking for Alaska” and I have to say that at I was laughing at the start ant I was crying at the end of the book.Personally I loved your books and I am gonna spend the rest of the summer reading your books.


Jasmine Smith July 20, 2015 at 11:24 pm

i just beginning reading story of “An abundance of Katherines” i hope this story is good and amazing as i was reading in “the fault in our stars” and papertowns is amazing i love it!#summerbooksweekend i cant stop to keep going reading books all times made me feel peace in my life!


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Katharine July 24, 2015 at 5:57 pm

John Green,
I would just like to ask you something. When you were writing An Abundance of Katherine’s, did it ever, perhaps occur to you to spell Katherine a different way? Perhaps, oh I don’t know, Katharine? And also, what is your reasoning for the name Katherine?


Hassan July 26, 2015 at 2:27 pm

Big daddy is still watching Judge Judy on the couch.:)


ML July 31, 2015 at 9:24 pm

Just finished this book and thought ‘wouldn’t it be interesting if he wrote a book about Lindsey lee wells and her Colins’


Ria August 1, 2015 at 12:40 am

Hi John Green! I’m an absolutely fan of yours. The first book that I’ve red is ‘The Fault In Our Stars’ after reading it, I started to love your books and other books! And I know you’re an amazing author, I was inspired by you that’s why I’m writing right now too. I wanted to email you but I do not know your email lol. Right now, I’m writing about my thoughts and feelings and I wanted to share it to you. Hoping one day I’ll see you soon. Keep writing and inspiring us! Lots of love


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Kleymer August 6, 2015 at 8:31 pm

What´s your inspiration to write that book?


Isabel August 7, 2015 at 10:37 am

This book is underrated.


Claire August 10, 2015 at 3:46 pm

I love all of ur books but for some reason I just can’t connect with An Abundance of Katherines. But I really love all your other books. I can’t wait for them to be all made into movies.


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Those parfaits look amzbeaalls. Seriously I’m definitely going to be making these. I need to invest in some good mason jars and make quality things like this you are a genius.


YouCanCallMeQueenZ August 11, 2015 at 7:33 pm

“I aint got no type (nah)
Katherines is the only thing that I like…”


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katelyn August 12, 2015 at 5:41 pm

hey john green i have started reading you book the fault in our stars . I have seen the movie and know what happens . i am reading the fault in our stars and am only on pg.32 and i love it thank you for writing this book.


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