Shiloh Jolie has officially dropped dad Brad Pitt‘s surname from her moniker … the 18-year-old has been granted a name change, TMZ has learned.

In new court documents … Angelina Jolie‘s daughter received court approval to drop “Pitt” from her full name — which was previously Shiloh Nouvel Jolie-Pitt — and keep Jolie as her last name.

We’re told there was no formal hearing … the petition was simply granted without drama.

TMZ broke the story … Shiloh decided to change her name shortly after turning 18 back in May … filing the request just 3 days after her milestone birthday.

The legal move spoke volumes about Shiloh’s current relationship with her A-list father … who has reportedly been estranged from his 6 children with Angie since their contentious split in 2016.

While Angelina and Brad have been broken up for nearly 8 years, the former exes have dragged out their divorce in a messy court battle … and Shiloh has indicated she’s pretty much on her mom’s side.

And Shiloh isn’t the only Jolie-Pitt kid to distance themselves from the actor in recent months.

Zahara Marley Jolie-Pitt — who was first adopted by Angelina in July 2005 and then by Brad in early 2006 — appeared to also drop the “Pitt” from her last name, at least informally, during a sorority event back in November.

Then, Vivienne Jolie-Pitt — who Brad and Angie welcomed along with her twin brother, Knox, in 2008 — styled herself as simply Vivienne Jolie in the Playbill for Broadway’s “The Outsiders,” where she worked as a production assistant.

Another day, another schism in this ongoing family feud.