George Zimmerman was involved in a shooting with another man, and Zimmerman’s lawyer tells TMZ … his client and the other guy may not be strangers.

The shooting went down Monday afternoon on a road in Lake Mary, FL … where Zimmerman lives. Police tell us they got a call for a road rage incident. News footage from the scene shows a bullet hole in the front passenger side window of Zimmerman’s truck.

Got the drop at TMZ . . .