General:
* Wit
* Humor
* Funniness
* Comicality
* Merriment
* Lightheartedness
More specific:
* Dry wit
* Sarcasm
* Irony
* Satire
* Wry humor
* Deadpan humor
* Self-deprecating humor
Informal:
* Funny bone
* Laugh track
* Comedic timing
* Punchline
The best word choice will depend on the specific meaning you want to convey.