It figures ... only Hulk Hogan's wedding would require a referee -- TMZ has learned cops were called when a brawl broke out in the middle of the nuptials this evening in Florida.
Sources at the wedding tell us a photographer was trying to snap shots of Hulk and his bride-to-be, Jennifer McDaniel, during the ceremony in their backyard -- which happens to be on the beach in Clearwater.
We're told a family employee told the photog to beat it -- and then the scuffle broke out just as Hulk and Jennifer were saying their vows. Classic.
Cops were called, but no one was arrested -- since no one wanted to press charges -- and the ceremony continued ...right through Hulk and Jennifer's 'I dos.'