The Paris Olympics are trending BIG in porn ... because a wave of horny people are now scouring the internet for adult videos related to the Summer Games -- reaching Gold Medal level views.
A rep for PornHub tells TMZ ... the site is seeing a huge surge in searches for the term "Olympics," up 4,876% since the start of the games -- a grower and a shower total over the last few days.
The term "athlete" is also up 505% ... even though no one competing in the Paris Olympics is actually featured in pornos -- so that search ain't taking you to any NSFW Simone Biles or Noah Lyles content.