Shannara. At least the first few.

Surprised I haven’t seen someone yet mention Magician by Raymond E Feist. That whole first riftwar trilogy is great. Also the spin off Empire trilogy with Janny Wurts.

Also seconding those who mentioned the R.A. Salvatore books including the Dark Elf series and the Icewind Dale series.

Kurt Vonnegut - Slaughterhouse 5

Firsthand account of one of the scariest events of the Second World War in the shape of highly entertaining sci-fi novel.

Must read for everyone.

I would say Dune. It is sci-fantasy but I think it is ok.

Discworld (Terry Pratchett), no question.

Ringworld is solid. Just about everything written by Larry Niven and Jerry Pournelle is good. When they work together, you get some solid stuff.

And books by Andy Weir are all very good. But you can cheat and watch the movies.

“Where the Red Fern Grows”

NK Jemisen’s Fifth Season has some of the most beautiful prose I read in the genre. Stunning and intimate.

Such good recommendations so far. If you like comics, I will add:

Saga

Lucifer

And since I don’t see him mentioned here: anything by Ian McDonald is wonderful, and I like everything by Mike Carey too. Not swords & dragons but fantasy books.

Series?

• Le Guin’s Earthsea Trilogy

• Lloyd Alexander’s Chronicles of Prydain

• Discworld, especially the Night Watch books

• Orson Scott Card’s Alvin Maker series

Individual Books:

• Robin McKinley, The Hero and the Crown, or anything else she wrote

• Diana Wynne Jones, Fire and Hemlock and Howl’s Moving Castle, or anything else she wrote

• Philip K. Dick, “Galactic Pot-Healer” (Dick straddles the line between science fiction and science fantasy, but this one’s firmly the latter)

• Madeline L’Engle, Many Waters

I’m sure I’ll think of more but my break is up.

Last time I recommend Terry Goodkind’s Sword of Truth series, I got crucified over it. Imma do it again. It was a formative work to me, and I frequently quote the wizards’ rules. Content warning though: some scenes are quite disturbing, and some of Terry’s political opinions leak into the text and are questionable at best.

Mercedes Lackey’s Valdemar series is another of my favorites, and I think I can recommend it without content warnings but it’s been a long time since I read it so I don’t really remember.

Louis McMaster Bujold’s Vorkosigan Saga is also very good. Scifi instead of fantasy, but how often do I get the chance to recommend books?

I don’t really like manga, but one of the best stories I’ve ever read in any format is the 7-volume Nausicaa of the Valley of the Wind. It’s post-apocalyptic fantasy about the nature of evil, the corruption of humanity, the extent to which individuals can fight against historical forces, and the fragility of civilization, for a start. Plus there’s a lot of action and world-building. There’s an anime movie which covers about one tenth of the story, if you want to get a feel for it.

Loads of great suggestions in this thread, but I feel it’s missing some lighter, easy to read and fun fantasy. So, let me suggest two series:

• The Riftwar Saga by Raymond E. Feist. Enough books to last you a year. Can get a bit dark at times, but the prose is really fast flowing, the books are focused on high adventure, and the characters are really likeable. The series contains a trilogy that starts with Daughter of the Empire, which features a far higher quality prose, but it’s tonally so different from the other books that you may want to skip it if you liked the first trilogy (or tetralogy, depending which edition you pick up).

• The Elenium trilogy by David Eddings, followed by the Tamuli trilogy. Eddings is best known for his Belgariad, but this trilogy is such a lightearted fun that I re-read it every couple of years.

Ah, I love recommendation posts.

It depends on what you actually enjoyed reading and why. I see you already have a lot of great suggestions. The only author I haven’t yet seen mentioned is perhaps Asimov, although you said you prefer fantasy to sci fi. That’s also my preference, however I find his short stories are worth reading and also low commitment for this reason.

One thing I find useful in recommendations is to know what else people have read and what they think about that. It helps me get an idea of which books I’m more likely to enjoy best or not, especially if I can compare their thoughts to mine about the same books. With that in mind, my thoughts:

Discworld is amazing. Pratchett is a great author. I like that he can write a story that on the surface is just a simple comedy/adventure, but if you are the type that also analyzes what they read you will soon see his stories go much deeper than what they appear to be. He will keep things entertaining and witty but also throw at you a piece of his mind for you to mull over and reflect on various aspects of life. Small Gods is one of my favorites.

I also really enjoyed Dungeon Crawler Karl, and I mean really really really. Hilarious. But it doesn’t have the depth Pratchett has.

On a similar vein, The Witcher- loved the characters and the story is very entertaining, but t can’t say I was blown away as with Pratchett.

I absolutely loved Abercrombie’s First Law trilogy. Now that’s some solid writing. The characters are so well fleshed out, unique, original. Somehow the world and the plot feel realistic, crazy as it sounds for a fantasy book. It may feel a bit slower in pacing than any of the three I previously mentioned, but not slower than LOTR which you have already read.