Free Sci-Fi eBooks

Free Sci-Fi eBooks are available on these websites. Links direct you straight to the chosen category if there are other categories on the site. There is a general description of these websites as well.

Similar category: Fantasy Free Fantasy eBooks

REG* - Registration ASC - websites that do not need registration are at the beginning of the list for easy access to free content.

Listing of sites that offer Free Sci-Fi eBooks

These websites have a databases, collections or listings of Free Sci-Fi eBooks.
You can also browse our collection of ebook websites that have Multiple Categories, which may consist the category you are interested in. Also you can check our Main Free eBook Websites.
See also our website collection of Sci-Fi Audiobooks.