Remember back when DaBaby was beating on concert promoters, airport food vendors, and hotel valets?

Add another working man to the list.

There's a previously unknown warrant out for DaBaby's arrest for assaulting a taxi cab driver in Las Vegas last November.

According to the police, DaBaby and his crew ordered a Mercedes Sprinter van to take them to the Hard Rock hotel.  Along the way, they sparked a joint.  The driver told them to put it out.

When the driver asked DaBaby to pay up for the ride, he allegedly hit him in the back of the head and said "You ain't the boss." 

A member of DB's crew then told the driver "You're lucky you're not in my city because I would have killed you cracker motherf***er" and another made a comment about leaving the driver "dead on the road".

No word from DaBaby's camp on the allegations.