Ryan Lochte -- Clubbin' With Amber Rose ... In The Bahamas

Amber Rose partying with Ryan Lochte?!?!?

JEAH!!!!

Amber and the Team USA Olympic swimmer were spending some time together last night at the Atlantis in the Bahamas ... where Lochte has been kickin' it for Spring Break.

Lochte has been training during his vacation ... but you know what they say -- work hard, play hard.

As for Amber, she's workin' too -- hosting a big Spring Break party tonight with DJs and tons of booze.

No word if the two hooked up -- but they definitely seemed to be enjoying each other's company.

Amber had said that she was gettin' close with NBA star James Harden last month -- but they were never official.

Soooo ... seems like the pool's open!