A man was killed with a bullet to the back of his head outside a Queens restaurant on Sunday morning, cops said.

The man, who was in his 20s, was shot near 65th Place and 53rd Drive in Maspeth around 3:50 a.m.

Police said it was believed the shooting happened outside Paraguayan Steakhouse.

The man, whose identity wasn’t immediately released, was pronounced dead on the scene. 

There were no witnesses when cops arrived, a police spokesman said.

No further details were immediately available.