The Adrenaline Junkie star, who has previously dated models Kimberley Stewart and Kate Moss, explained that he could appreciate the different qualities of potential love interests on either side of the Atlantic.
"If you're going for au naturel beauty, the UK is the best place," he told Bang Showbiz. "But if you want a bit of plastic fantastic and a touch of enhancement, then America is better.
"I'm single at the moment, but I don't mind whether a girl is from the UK or US."
Osbourne added that he still has Stewart's old breast implants, which she gave to him in 2005, framed on his wall.
"Kim gave them to me after I jokingly asked for them - it wasn't anything pervy. They just look like plastic balloons on the wall. Unless someone told you what they were, you wouldn't even realise.
"I would put them on another wall if I moved house. They're funny."