Lionel Richie -- Going Hard in Greece ... ALL NIGHT LONG (VIDEO)

Lionel Richie jumped on a table in a bar, and gave a bunch of drunk tourists a night to remember ... when the DJ cued up his famous party anthem.

The awesome scene went down on Mykonos ... where Lionel's on vacay, and all you need to know is the bar was packed with people slamming champagne. Lionel was obviously feeling really goooood ... then "All Night Long" came on, and everyone lost their minds.

This could only be better if the DJ followed up with "Dancing on the Ceiling." Watch, it's almost enough to make Greece forget it's going broke.