The 100 Most Popular Sci-Fi Books on Goodreads

Dystopias, alien invasions, regenerated dinosaurs, space operas, multiverses, and more, the realm of science fiction takes readers out of this world to tackle all-too-real issues, including oppression, bigotry, censorship, and the horrors of war. To celebrate the most inventive of genres, we’re exploring readers’ 100 most popular science fiction novels of all time on Goodreads.
As all good sci-fi readers know, the science behind the story is half the fun. To create our list, we ran the data to reveal the most reviewed books on our site. Additionally, each title needed at least a 3.5-star rating from your fellow readers to join this list. And, since science fiction is known for its continuing voyages, in the case of multiple titles from the same series, we chose the one with the most reviews.
Here are the top science fiction novels on Goodreads, listed from 1 to 100. We hope you discover a book or two you’ll want to read in this lineup, whether it’s a classic of the genre or one of the newer entries to sci-fi.
How many of these books have you read? What’s your favorite sci-fi novel of all time? Let’s talk books in the comments!
Comments Showing 101-150 of 521 (521 new)





"Stand on Zanzibar" as well, please.

While Goodreads didn't spell out their algorithm for compiling this list in detail, they did say above,
"we ran the data to reveal the most reviewed books on our site." From this we glean that they are using number of reviews (or perhaps number of ratings) as a primary factor in ranking. This is still insufficient detail to understand the ranking fully. For example, is it based solely on the number of written reviews, or are number of ratings important? If ratings are important, are 5 star reviews counted for more? If not, does this mean that a controversial book that attracts more reviews, even if not positive, will be higher on the list than another? You would also naturally see a tendency for older books to be on the list as they have had much longer to garner a following and have more publicity.
These are just a few artifacts that would need to be controlled for. I'm sure there are others. Goodreads does add the caveats that a book must be 3.5 stars or higher to be included, and that they only include one book of a series on the list, regardless of if the review numbers of other books in the same series would merit their inclusion on the list.
The list is just a little fun, i'm sure. It's basically Goodreads just sharing the data they collect on their servers. There are so many good Sci-Fi books out there, and so many opinions that i'm sure any comprehensive-best-list would get heavily scrutinized and critiqued.
I have loved reading everyones comments! Almost more so than the list itself, because you find little gems that way that aren't 'mainstream'. I have gained many new titles to add to my to-read shelf. Keep reading my friends, and keep sharing your favorites in the comments. Its great to be exposed to new books!



Heinlein may have been okay in his time, but geeezus, he's right up there with mullets in the 21st century. The less seen and said about anything related to him and his writing, the better.


Where is The Humanoids? To Your Scattered Bodies Go? Time for the Stars? There Will be Time? Double Star? The Uplift War? Galactic Patrol? Brain Wave? Glory Road? Footfall?


Starship Trooper, Dirk Gently and Ready Player One ?
Really ? ..."
Amen. Heinlein may have been okay in his time, but geeezus, he's right up the..."
Heinlein is easily the best science fiction author ever. More of his books should be on the list, admittedly I would not have included Stranger in a Strange Land.





Just because a book has been around a long time doesn't make it good.
Many of the "classics" have been read just because they've been around a long time, and people have eventually decided "well I might as well find out what all the fuss was about".
and as folks have pointed out, there are LOT of well-rated books that got shunted out by famous (but less liked) works.


It is on the list- #20 to be exact:-)


Good point! Got some other Non-English books to suggest? Thanks, Rob.

I would agree Mistborn one of my all time favorite series

Yes Dune should be number one!

SF has moved on from this , become mainstream ?
ALL of the Culture works from Iain Banks should be in the top ten surely!"
Wow I agree

Mind-blowing.


Everything written by Robert Heinlein
The rest of the Foundation series by Asimov
"All My Sins Remembered" by Joe Haldeman
"Babel 17" by Delany
"Dragonriders of Pern" the whole series of books by McAffery
Definitely gonna follow up on some of the extra recommends listed here in the comments too.

Sanderson is more fantasy then Sci Fi to me although I know some shade that line differently. What from GRRM did you have in mind?

I don't know that you could leave it off the list, but honestly I would not re-read. I read it in recent years and although it has some interesting ideas is not a very gripping read in the 2nd half.
Yes, you're right, but I think that people who love SF (like me) are actually reading all the comments, and are thinking that by mentioning an author not in the list, other comments-readers will have that writer's name and work drawn to their attention. This is especially the case for relatively recent SF authors, since the list is clearly strongly biased towards older books.