Arvind Singh, Akhand Singh, Prithvi Singh and Pintu Vishwakarma attacked Prakash Bansal, who was heading for the wedding venue in a decorated car last night, Inspector Rameshwar Dayal of Orchha Road police station said.
The group of four men forced Mr Bansal to alight from the car and thrashed him and six others of the marriage party, he said.
They also allegedly smashed up the camera of a photographer hired for the wedding, he said.
A case under relevant sections of Scheduled Caste and Scheduled Tribe (Prevention of Atrocities) Act has been registered, police said.
Incidents of members of upper castes objecting to dalit grooms riding horses or using fancy vehicles during weddings have been reported in many areas, especially in Bundelkhand region.