Michael Lohan -- The Newest Mug Shot

TMZ has obtained Michael Lohan's newest mug shot -- this time, Lindsay's dad struck a pose after being arrested for violating a restraining order.

Cops busted Lohan in New York yesterday after allegedly making a phone call to his ex-girlfriend Erin Muller -- a direct violation of the restraining order she has against him after an incident in March.

Lohan was charged with criminal contempt of court.