The star won best supporting actor for his performance in 'Oppenheimer'
The star, 58, won for Oppenheimer, up against Sterling K. Brown for American Fiction, Robert De Niro for Killers of the Flower Moon, Ryan Gosling for Barbie, Charles Melton for May December and Mark Ruffalo for Poor Things.
Downey Jr. used a good portion of his speech to hilariously read off a list of comments he said the Critics Choice Association has made about him in the past.
"The first one's kinda like haiku: 'sloppy, messy and lazy.' The second one's more metaphoric: 'Like Pee-wee Herman emerging from a coma,' " the actor said.
"This was from a Brit: 'A puzzling waste of talent,' " he continued, putting on a British accent, ending with, "And lastly — and this one lingered — 'amusing as a bed-locked fart.' "
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For his performance in the all-time highest-grossing biopic Oppenheimer, Downey Jr. raises his Critics Choice nod tally up to four.
Opposite Cillian Murphy’s titular protagonist, Downey Jr.’s Admiral Lewis Strauss serves as J. Robert Oppenheimer’s primary antagonist as the physicist navigates the moral and emotional dilemmas of creating the atomic bomb.
Along with Downey Jr.’s nomination, the Christopher Nolan film is in contention for 12 other categories.
Brown, 47, received his first Critics Choice nod and win in 2018 for his leading role in the drama series This Is Us, but his role in American Fiction is the first acknowledgment of his film work at the ceremony.
In addition to Brown’s nomination, American Fiction is up for four more categories, including best comedy and best picture.
Martin Scorsese’s epic thriller Killers of the Flower Moon sees De Niro, 80, as William King Hale, a remorseless crime boss responsible for the murders of the Osage Nation. The Godfather actor nabs his fifth recognition by the Critics Choice Association.
Gosling’s over-the-top Kenergy garnered rave reviews after the summer blockbuster Barbie. No stranger to the Critics Choice Awards, the La La Land actor, 43, adds a ninth nomination to his count with his role as the Mattel doll’s head-over-heels boyfriend Ken.
Greta Gerwig’s Barbie is up for a record-breaking 18 categories, with best director for Gerwig, 40, best actress for Margot Robbie, best supporting actress for America Ferrera and best picture among the mix.
The Riverdale star played Joe Yoo, a 36-year-old man stuck at the emotional age of 13, when he began an affair with Gracie (played by Moore, 63), a woman two decades older.
The wild comedy sees Dr. Godwin Baxter’s (Willem Dafoe) childlike science experiment Bella flounce about Victorian Era London accompanied — or rather, chased — by Duncan.
The Avengers star has three more nominations for best supporting actor at the Critics Choice Awards for 2011’s The Kids Are All Right, 2015’s Foxcatcher and 2016’s Spotlight. Poor Things has 13 total nods.
See PEOPLE's full coverage of the 29th annual Critics Choice Awards as they're broadcasting live from Barkar Hangar in Santa Monica on The CW.
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