Marcel Duchamp, Andy Warhol and Salvidor Dali's work for starters! They all used humour at some point.

In several ways - in one of my recent answers, I quoted Magritte's painting of a pipe with the line added: This is not a pipe. funny and quite philosophical at the same time. an artist I like a lot who is quite funny is John Baldessari. For one piece, he had students write the sentence "I will make no more boring art" onto a wall, hundreds of times, like naughty pupils being disciplined. The Swiss artist Roman Signer is funny. He lets things explode and makes videos of that. Richard Prince's Joke Paintings are funny, if a bit cynical. The sculptures by ERwin Wurm are funny. Among others, he made a soft version of the Guggenheim Museum, melting away like an ice cream cone in the sun. As you see from these randomly chosen examples, funny art can come in all sorts of media. One of my favorites is the painter William N. copley, who wrote very funny aphorisms: "I have a very dirty mind. It has brought me neither success not failure." "My fatherland can *$§!* your motherland." Andy Warhol had two dogs. He named them Fame and Fortune. He also said: "I would attend any opening, even the opening of a toilet seat." Barnett Newman once said "Aesthetics is to the artist as ornithology is to the birds." I could go on and on with this...

norman rockwell and his saturday evening post magazine covers. people laughing at themselves.

Cartoons are another supreme form of art. A good cartoonist crams a lot into his picture, and very succinctly helps us see the "funny side" of even a grim situation. It's a pity Punch magazine is no more. It had some of the best cartoons ever. If you want something more earthy, you should look at Art Frahm. A little naughty, but fun. Depends upon how you choose to look at it. I'll take my chance with you with this example.

Look up the artist, "Banksy." I think most of his stuff is hilarious!