"Humour isn't just what you see on YouTube or Saturday Night Live. In fact, some of the funniest books stand the test of time for decades --or even centuries." (Goodreads)
I arbitrarily imposed a limit of 5 books per author. Suspect entries were removed. The list comes with many jolly new covers.
For some extra fun, you can also try to spot the works that were on the original list but are not actually novels!