Ellen DeGeneres has thrown her support behind Rosie O’Donnell after President Trump threatened to strip the comedian of her US citizenship.

The former talk show host, 67, hopped on Instagram over the weekend to praise the “A League of Their Own” actress, 63, after she called the commander in chief a “dangerous old soulless man.”

“Good for you,” DeGeneres — who relocated to England with her spouse earlier this year — commented alongside a capture of Trump’s Truth Social message, as well as a snapshot of O’Donnell’s reply to the president.

On Saturday, the President of the United States expressed his anger, mentioning he’s seriously thinking about revoking the comedian’s US citizenship — which led her to respond with a series of posts criticizing him and showing images of him with Jeffrey Epstein. 

The digital spat kickstarted after Trump branded O’Donnell a “threat to humanity” in a fiery post on his social media platform.

“Because of the fact that Rosie O’Donnell is not in the best interests of our Great Country, I am giving serious consideration to taking away her Citizenship,” Trump wrote.

“She is a Threat to Humanity, and should remain in the wonderful Country of Ireland, if they want her. GOD BLESS AMERICA!” 

O’Donnell has been living in the Dublin suburb of Howth, in Ireland, with her 12-year-old child since January, having originally moved there following Trump’s election win over Kamala Harris.

In March, O’Donnell revealed she and her child, who is non-binary and autistic, were in the process of obtaining Irish citizenship following their trans-Atlantic move. 

The comedian took to Instagram over the weekend to issue a scathing response to the prez following his strongly-worded post.

“Hey Donald – you’re rattled again? 18 years later and I still live rent-free in that collapsing brain of yours,” O’Donnell said in one post, featuring a photo of Trump posing with Epstein. 

“You call me a threat to humanity – but I’m everything you fear: a loud woman a queer woman. A mother who tells the truth an American who got out of the country b4 u set it ablaze,” she railed. 

“You crave loyalty – I teach my children to question power you sell fear on golf courses – I make art about surviving trauma you lie, you steal, you degrade – I nurture, I create, I persist. You are everything that is wrong with America… I’m not yours to silence. I never was.”

It’s unclear what legal basis Trump could use to strip the Long Island native of her American citizenship.

Under current law, Americans cannot lose their US citizenship status even if they obtain citizenship elsewhere.