Is it normal to laugh in your sleep?
Mostly.Normal for most people
Yes, laughing in your sleep can happen and is usually harmless. It may be connected to a dream, though you might not remember one when you wake up.
Sleep laughter is one of those odd things your brain can do while you’re asleep. It can happen during dreaming, and sometimes you’ll have no idea you did it until someone tells you.
If it happens now and then and you wake up feeling fine, it’s generally nothing to worry about. If it starts happening often alongside unusual movements, injuries, or major sleep disruption, it’s worth asking a healthcare professional about it.