Karl Schroeder is a Canadian Sci-Fi author. His works are mostly set in the very far future, featuring technology so advanced [[ClarkesThirdLaw it might as well be magic]].

His novels include:
* ''Ventus'', and its prequel ''Lady of Mazes'': Set in a universe of [[{{nanomachines}} nanotechnology]] and [[ArtificialIntelligence ubiquitious AI]]. ''Ventus'' is about a [[{{Terraform}} terraformed]] planet where [[DeusEstMachina the nanotech]] [[AIIsACrapshoot has gone rogue]], while ''Lady of Mazes'' is a distant prequel that sets up the future history in ''Ventus''.
* The ''Virga'' series: Technically set within the same universe as ''Ventus'', but is a stand-alone series. The title Virga is a "world" that consists of [[TheSkyIsAnOcean endless sky]]...nearly. It's actually a [[HollowWorld 3000-mile wide fullerene balloon]] filled with air, complete with artificial fusion-powered "suns", clouds, and a smattering of [[WorldInTheSky asteroids]]-- and no gravity. The series focuses on the [[SkyPirate steam-punk society]] that lives inside.
** ''Sun of Suns''
** ''Queen of Candesce''
** ''Pirate Sun''
** ''The Sunless Countries''
** ''Ashes of Candesce''
* ''Permanence'': A stand-alone novel in a separate universe. Explores the idea of a space-faring civilization that uses slower-than-light "Cyclers" - vast trade/cargo ships that slingshot between stars in a continous loop.
* ''Lockstep'': Set in a MundaneDogmatic universe, where it takes decades just to ''talk'' to other stars, an interstellar civilization maintains a program of "Lockstep" whereby all its distant colonies go into stasis/hibernation for set periods of time in order to keep the whole civilization synced up.