Brad Pitt's heartbreak continues as son Knox drops his surname weeks before 18th birthday… after his other kids with ex Angelina Jolie did the same

Brad Pitt's heartbreak continues as his son Knox recently dropped his famous father's surname in the wake of his other siblings doing the same. 

The 17-year-old removed the last name of Pitt from his high school diploma as he graduated from Fusion Academy in Los Angeles earlier this month, per Page Six. 

Instead, the teen's name was simply listed as Knox Jolie on the official certificate. 

Knox was cheered on by his mother Angelina Jolie at the graduation ceremony as well as brother Pax, twin sister Vivienne and sister Zahara. 

Daily Mail has reached out to reps of Pitt for comment, but did not immediately hear back. 

It comes just weeks before Knox is set to celebrate his 18th birthday alongside twin sister Vivienne on July 12. 

And during the teen's graduation in Los Angeles earlier this month, he notably dropped an F-bomb during his speech. 

The moment occurred when he had been discussing his upcoming martial arts showdown and predicted that it would be a knock-out fight. 

While wearing a blue cap and gown, Knox stepped up to a podium in videos uploaded to social media. 

'Tonight, I'm gonna be fighting at Total Sonic Knockout 5 at 12:45 AM, so catch me,' he confidently told his fellow classmates. 'I'm gonna knock 'em the f**k out!'

His mother and actress Angelina Jolie had been in the crowd as she proudly filmed her son with her phone. 

Pitt and Jolie were previously married from 2014 until their divorce became legal in 2019. 

And in late 2024, it was revealed that the former couple had reached a divorce settlement following a lengthy, eight-year battle. 

The two stars share three biological children Shiloh, 20, as well as twins Knox and Vivienne. The pair also share Maddox, 24, Pax, 22 and Zahara, 21. 

Just days earlier, it was also revealed that Pitt and Jolie's daughter Zahara was making legal moves to remove Pitt from her last name, InTouch reported on Monday.

The next day, TMZ obtained a petition Zahara filed in Los Angeles Superior Court, where she asked for her new legal name to be Zahara Marley Jolie.

She has not been using Pitt's last name for many years. Pitt was notably absent from her name when she joined a sorority at Spelman College three years ago.

And in May, Zahara did not use the name Pitt when graduating from Spelman College. Jolie had also been in attendance at the ceremony. 

Another source told TMZ that Pitt thinks Jolie is keeping their children from seeing him. Jolie and Pitt were raising six children together before she filed for divorce in 2016.

Their kids Shiloh, Maddox, and Vivienne have also stopped using Pitt's last name. It is not known if Pax has stopped using the name as well.

It was confirmed by the Daily Mail back in May that Maddox requested to legally remove 'Pitt' from his surname. 

He is changing his full name to Maddox Chivan Jolie and listed the reasoning as 'personal.' 

Back in 2024, Vivienne also dropped her dad's last name in a Playbill credit for The Outsiders. 

That same year, Shiloh dropped Pitt from her name shortly after her 18th birthday.

At the time, a source told the Daily Mail: 'He knew this was coming and there is nothing he can do about it right now.

'It's sad but Brad's strained relationship with his kids and Angelina is just a way of life for him now.'

However, the insider further explained that the actor has always left the door open if his estranged children wanted to reconnect. 

'He respects Shiloh's decision. He loves her and no matter what happens, he is always only a phone call away. 

'He will be there for Shiloh and any of his kids whenever they need, no questions asked. But it's up to them to make the next move.'

A separate source stated that Pitt 'knows that, with some of the other kids who are not biologically his children, they do not understand and may never allow him back into their lives.'

Back in 2016, Pitt and Jolie's relationship came to an explosive end after the pair got into an alleged physical altercation while on a private flight with their six kids.

Jolie later claimed that Pitt 'choked' one of the children during the horrifying dispute and 'struck' another in the face, leaving her and the kids feeling like 'hostages' and cowering in fear under a blanket for hours until they landed.

She also alleged that he grabbed her by the head, slammed her against a wall, and violently shook her at one point during the flight - which resulted in her injuring her back and elbow.

Pitt's rep called Jolie's account 'completely untrue' to CNN at first, but then released an amended statement to the publication that read, 'Angelina's story continues to evolve each time she tells it.

'Brad has accepted responsibility for what he did but will not for things he didn't do. He has been on the receiving end of every type of personal attack and misrepresentation.

'Thankfully, the various public authorities she has tried to use against him over the past six years have made their own independent decisions.'

The statement at the time also read, 'Brad will continue to respond in court as he has consistently done.'

The F1 actor has been romantically linked to Ines de Ramon since 2022.