The party on Sunday in the upper Bavaria town of Taufkirchen, ended with a mass fight in which six people were seriously hurt, two so badly that they ended up in hospital.
The fight was only broken up when the initial police officers who showed up at the restaurant called for back up to help pull scrapping guests and staff off each other.
The reason why the wedding party turned into a mass fight is not yet clear, but it appears that some of the 300 guests had an argument with some of the restaurant staff, which got completely out of hand.
A group of around 30 guests apparently became physically involved in the fight. Five suspects were arrested.
The bride and groom could not be found on Monday.