I've read so much Sci-Fi and Fantasy fiction that it is difficult to remember the names of all the authors I like, and trawling through these lists I am reminded of so many of them:

List of science-fiction authors

The page has links - in the box on the right hand side and also a list of links at the bottom of the page - to other pages such as:

Fantasy fiction article

Alternate history fiction article

and a range of specific genres within Sci-Fi and horror fiction.

I'm reminded of a few authors who have strayed into Sci-Fi from mainstream fiction.

One of my all-time favourite mainstream fiction authors is Margaret Atwood who wrote The Handmaid's Tale, and Oryx and Crake in 2003, the first novel in a series including The Year of the Flood (2009) and MaddAddam (2013).