3:20 PM PT -- Ryan Gosling just addressed the fact he was nominated, but Margot Robbie and Greta Gerwig were not. He told the NY Post ... "I am extremely honored to be nominated by my colleagues alongside such remarkable artists in a year of so many great films."

He adds, "And I never thought I’d be saying this, but I’m also incredibly honored and proud that it’s for portraying a plastic doll named Ken. But there is no Ken without Barbie, and there is no Barbie movie without Greta Gerwig and Margot Robbie, the two people most responsible for this history-making, globally celebrated film."

Finally ... "No recognition would be possible for anyone on the film without their talent, grit and genius. To say that I’m disappointed that they are not nominated in their respective categories would be an understatement. Against all odds with nothing but a couple of soulless, scantily clad, and thankfully crotchless dolls, they made us laugh, they broke our hearts, they pushed the culture and they made history. Their work should be recognized along with the other very deserving nominees. Having said that, I am so happy for America Ferrera and the other incredible artists who contributed their talents to making this such a groundbreaking film."

Ryan Gosling just got an Oscar nomination for his role in "Barbie," but the lead actress herself -- Margot Robbie -- was left out in the cold ... and yes, people are pissed.

The Academy Award nominations were announced Tuesday, and RG was on the list for Best Supporting Actor -- alongside Sterling K. Brown, Robert De Niro, Robert Downey Jr. and Mark Ruffalo. The black sheep in this group, you could argue, is Ryan ... who played Ken.

It was a goofy and even goofier performance -- and yet, Academy members seem to think he acted his ass off and is worthy of recognition ... something insiders predicted for months.

Now that it's happened, a lot of folks are happy for the Ry Guy -- but even more are angry on behalf of Margot ... who got snubbed this morning, and didn't receive an acting nomination herself. To be fair, there was a lot more buzz around Ryan ... but there's still outrage today.

The argument here for MR basically amounts to ... she freakin' carried that movie, and she showed some range in the titular role as Barbie, going through a roller coaster of emotions.

Some are chalking it up to good old-fashioned sexism/misogyny ... and are crying foul.

While Margot missed out, her costar America Ferrera didn't -- she was nominated for Best Supporting Actress, and 'Barbie' itself is up for Best Picture. It's just Margot who got screwed.

So, here's the question ... do you think she deserved to get an Oscar nod, or not???

We covered it all on the latest episode of The TMZ Podcast, available on all podcast platforms.