r/whatsthatbook
343k members
r/whatsthatbook is a subreddit with 343k members. The community frequently discusses book, ya, children, fantasy, and looking for a book, and they frequently recommend/review mystery books, book series, and guided meditations, and the most common flair used is unsolved and solved :redditgold:.
Can't remember the title of the book you've enjoyed reading? Crowdsource it to readers on Reddit!
Popular Topics in r/whatsthatbook
#1
Book
261 posts
#2
Ya
86 posts
#3
Children
83 posts
#4
Fantasy
69 posts
#5
Looking For A Book
57 posts
#6
Romance
41 posts
#7
Struggling
32 posts
#8
Girl
29 posts
#9
Magic
25 posts
#10
Novel
22 posts
Products Discussed in r/whatsthatbook
Mystery Books
3 reviews
#1
Donald J. Sobol
5.0★ from 1 review
#2
Jim Sukach
5.0★ from 1 review
#3
The Mysterious Benedict Society
5.0★ from 1 review
Book Series
1 review
#1
Roland Smith
4.0★ from 1 review
Guided Meditations
1 review
#1
Maureen Garth
4.0★ from 1 review
Flair Used in r/whatsthatbook
#1
UNSOLVED
: "Long shot - Children’s Book Title from 80s"
135 posts
#2
SOLVED :redditgold:
: "White cover with silver name and a girl face, main character becomes a ghost and visits a school for supernatural beings"
4 posts
Member Growth in r/whatsthatbook
Yearly
+34k members(11.2%)
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About
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This page gives a focused view of r/whatsthatbook, including current member size, discussion patterns, product reviews, and related communities to explore.
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Last updated: October 11, 2026