https://en.wikipedia.org/wiki/List_of_dragons_in_literature
Ones Memorable to me.
McCaffery: Pern series (though they are not what they appear to be)
Ursula Le Guin : Earthsea Trilogy, now more than 3. Dragons in newer books, but you need to read the older ones
The Hobbit,
The Voyage of the Dawn Treader
Eragon (Inheritance series)
Robin Hobb's Liveships series, then Elderlings, then Tawny Man. Various ones, not in Soldier Trilogy.
Cornelia Funke: Dragon Rider (The Inkspell series is a bit older and better)
Terry Brooks, Magic Kingdom of Landover novels Strabo is an occasional character
C.J. Watterson: Of North Blood Drawn (incidental, but I suspect a later book of the series may have more)
Perhaps Raymond E. Fiest's "Magician", I like it, but it's not to everyone's taste. First in a long series of books. No dragons in the rest.
Oh, an amusing parody of Dragons in 1st or 2nd Discworld books. Later books featuring Ankh Morpork have pet swamp dragons, though in one book, one faces a Noble Dragon.
Many of the books listed in the Wikipedia article are only incidentally dragon or else not so good any way. I see there are other book on the Wikipedia list I've read, some good, some bad, but above are the most memorable.
There are others here better steeped in Dragon lore.
It's not exactly a genre. That would be like saying Trolls, Dwarfs or Elves are a Genre, they are in SF. The Pern series, especially on the early & better ones, feels like Fantasy. But technically it's got no magic and is "really" SF. The early ones are very good indeed.