About r/whatsthatbook
Can't remember the title of the book you've enjoyed reading? Crowdsource it to readers on Reddit!
The community at a glance
r/whatsthatbook is a Subreddit for Reading and Readers with roughly 335K members. It has been around since 2013. It uses a forum format for communication. On the Hive Index it ranks #6 in the Reading communities list. It is the 5th largest community in the Books topic page.
Roughly 37K members have joined in the past year. Popular discussion topics include Book, Ya, and Children. Product recommendations often mention books about psychology and fantasy series.
Community Topics
Community Features
This community has a forum
Subreddit Analysis
via GummySearchMember growth over time
All time (yearly)
- 2024: 42K members
- 2025: 40K members
- 2026: 19K members
Past year (monthly)
- Jul: 3K members
- Aug: 3K members
- Sep: 3K members
- Oct: 2K members
- Nov: 3K members
- Dec: 3K members
- Jan: 3K members
- Feb: 3K members
- Mar: 3K members
- Apr: 4K members
- May: 3K members
- Jun: 3K members
Topics
- Book261 posts in the past month#1261Book
- Ya86 posts in the past month#286Ya
- Children83 posts in the past month#383Children
- Fantasy69 posts in the past month#469Fantasy
- Looking For A Book57 posts in the past month#557Looking For A Book
Flair
- UNSOLVED199 posts in the past month
- "My mouth will taste of cool plums:" Golden age sci fi/weird tale short story where an unseen woman promises a harried commuter peace if he marries her sight unseen
- Fantasy Book from childhood: The tall wizard character was described as having brilliant white teeth that stand out against his black skin.
- Trying to identify a fantasy book/series (late 90s–mid 2000s?)
#1199UNSOLVED"My mouth will taste of cool plums:" Golden age sci fi/weird tale short story where an unseen woman promises a harried commuter peace if he marries her sight unseen · Fantasy Book from childhood: The tall wizard character was described as having brilliant white teeth that stand out against his black skin. · Trying to identify a fantasy book/series (late 90s–mid 2000s?) - SOLVED :redditgold:1 post in the past month
- Update On Post I Made Here 3 years ago.
#21SOLVED :redditgold:Update On Post I Made Here 3 years ago.
Product recommendations
- books about psychology2 posts in the past month
- Can you recommend books about psychology?
- Can you recommend books about psychology?
#12books about psychologyCan you recommend books about psychology? · Can you recommend books about psychology? - fantasy series2 posts in the past month
- AV club recommended fantasy series
- Fantasy recommended reading from 2007-ish
#22fantasy seriesAV club recommended fantasy series · Fantasy recommended reading from 2007-ish
Community Reviews
Frequently asked questions
- Who is r/whatsthatbook for?
- Best for Reading and Readers enthusiasts looking for a Reddit-based community with forum discussion.
- Is r/whatsthatbook free to join?
- This listing is not marked as paid-only. Access rules and any fees are decided by the community.
- How many members does r/whatsthatbook have?
- Roughly 335K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
- What platform is r/whatsthatbook on?
- r/whatsthatbook runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
- What topics does r/whatsthatbook cover?
- On the Hive Index, r/whatsthatbook is organized under Reading, Readers.
- How do I join r/whatsthatbook?
- You can join r/whatsthatbook by clicking this link, or pressing the "Go to community" button above.
- What are the Reading communities like?
- Communities for readers to share recommendations, discuss books, and participate in reading challenges. Reddit has massive subreddits for book suggestions and genre discussions, with Discord servers running read-alongs and buddy reads. Good for finding your next book, talking through what you just finished, or connecting with readers who share your tastes.
Monthly Stats
- 10
- Views
- 6
- Visitors
- 1
- Referrals
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