Adam Sandler and Margot Robbie were 2023's highest-paid actors -- but one is definitely making more than the other (and all the rest, too) with the difference being ... Netflix.

Forbes put out a list of all the big-shot actors who cleaned up last year -- and their ranking based on the numbers is interesting ... for a few different reasons, we suppose. For starters, the Sandman is king of the Hollywood money machine, having raked in $73 mil in '23.

If you're wondering where all that dough came from -- you can thank the biggest streamer in showbiz for lining his pockets ... Adam had 4 Netflix movies total that released last year.

Adam starred in "Murder Mystery 2," "You Are So Not Invited to My Bat Mitzvah," "Leo" and "Spaceman" ... with that last one being released this year, although he already got paid for it.

Netflix and Adam have been in business for years now -- he's got an exclusive deal with them to produce a crap ton of flicks ... and he's certainly fulfilling his end of the bargain. In return, the guy's getting paid handsomely ... which is nuts considering these are streaming movies we're talking about here. Just goes to show ... this is the way of the future!

Margot, meanwhile, made $59 million last year ... obviously, most of that is "Barbie" money -- it made over $1 billion at the box office -- and she had a small cameo in "Asteroid City."

The difference between Margot and Adam -- aside from the $14 mil -- is that MR's an old-fashioned actress in the sense that her movies are strictly in theaters. Hmm ... interesting.

The rest of the list isn't all that surprising, as it includes a lot of big names -- including Tom Cruise ($45M), Ryan Gosling ($43M), Matt Damon ($43M), Jennifer Aniston ($42M), Leonardo DiCaprio ($41M), Jason Statham ($41M), Ben Affleck ($38M) and Denzel Washington ($24M).

Something else folks are noticing about this list ... a lot more dudes than chicks. So yeah, there seems to be a bit of a wage gap in H'wood still -- and the fellas are well on top.