His famous temper strikes again!

Alec Baldwin flew into a rage and punched another driver who took his parking spot this afternoon in NYC, multiple reports confirm.

The actor had someone standing in the spot to save it for him outside his home on East 10th Street in the Village, when another person swooped in and took it. That's when the SNL funny man totally lost it, jumped out of the car, and punched the victim in the face!

Baldwin was arrested for misdemeanor assault, and is currently in a holding cell at the NYPD’s 6th Precinct station house in Greenwich Village.

Let's not forget this is the same guy that called his then 11-year-old daughter a "rude, thoughtless little piggy."

His nemesis President Trump just weighed in on the arrest... watch!