The never-before-published images, taken for a magazine in 2000 and obtained exclusively by The Post, include a number of frames showing the former “Saturday Night Live” star grabbing the media mogul’s buttocks as they pose back to back.

An even more shocking snap shows the pair posing on a bed, with Franken cupping Huffington’s breast with one hand.

“Franken was clowning around, but it really isn’t funny,” said a source from the shoot. “That’s his tactic, pretend like it’s all a big joke. Arianna was pushing his hands away. He was groping her. There was some fun attached to it, but she wasn’t enjoying it. She definitely told him to stop and pushed him away.”…

Huffington, however, denies anything was amiss — saying the touchy-feely photos were a nod to a TV sketch they did together in 1996.