Millie Bobby Brown's Real Name: Millie Bonnie Brown

Quick answer: Millie Bobby Brown's birth name is Millie Bonnie Brown. She was born on February 19, 2004, in Marbella (Málaga), Spain, and performs as Millie Bobby Brown—using Bobby in place of Bonnie (People; Biography.com; LOC).

Real name and early life

Contemporary profiles and her own comments establish Millie Bonnie Brown as the birth form; she has said she switched Bonnie to Bobby publicly “for shits and giggles,” making Bobby the familiar middle name in credits. Brown is the family surname. A British citizen born in Spain, she lived in the U.K. and later Florida before the family moved to Los Angeles for auditions. Early TV included Once Upon a Time in Wonderland, Intruders, NCIS, and Modern Family. Financial strain briefly sent the family back to the U.K. before the Stranger Things breakthrough.

Career highlights

Cast as Eleven in Netflix’s Stranger Things (debut 2016), she became one of the series’ defining performers, earning major award attention while still a teenager. Film work includes the Godzilla monster-verse entries as Madison Russell and other studio projects as she transitioned into producing and adult roles. Time named her to its 100 most influential list in 2018. Across the Eleven phenomenon, legal and encyclopedia references distinguish birth middle name Bonnie from professional Bobby while retaining Brown; the full birth name is Millie Bonnie Brown.

Subsequent seasons of Stranger Things kept Eleven’s story evolving from silent laboratory child to a more verbal, central emotional anchor of the ensemble.

Searchers should cross-check birth dates and spellings against the Sources list rather than unsourced social posts.

Name notes for searchers

“Bobby” in her billing is the chosen professional middle name; Bonnie is the birth middle name she has publicly acknowledged. Prefer People, Biography.com, and LOC over rumor threads. Wikipedia is a pointer after primary citations.