Soccer star Kurt Zouma -- a member of France's national team -- was caught on video kicking and slapping a cat ... and now, he's apologizing for his abhorrent actions.

The video -- which was believed to be filmed by Zouma's brother and posted to Snapchat over the weekend -- is disturbing ... and shows the 27-year-old picking up a cat and then kicking it across the floor.

Later in the footage, which was obtained and published by The Sun, Zouma can be seen appearing to throw things at a cat. Finally, toward the end of the clip, video shows Zouma slapping one of the animals in the face.