Millie

About Millie

Millie is a familiar English short form that has become a popular full given name. Its best-known longer connections are Mildred and Millicent, which lead to different early histories. The name now also carries strong associations with actor Millie Bobby Brown and the musical Thoroughly Modern Millie.

Meaning and origins

Through Mildred, Millie connects with the Old English meaning gentle strength. Mildred combines words for gentleness and strength, and was the name of a seventh-century abbess. The older name became rare after the Norman Conquest before returning to wider use in the nineteenth century.

Millicent has a different background. It developed through medieval French forms such as Melisent and Melisende from a Gothic name combining elements associated with vigor or bravery and strength. The Normans brought that name to England.

Millie can shorten other names containing a similar sound, so gentle strength is not a universal translation for every use. Its nickname history allows several longer forms to meet in the same two syllables. Milly is a closely related spelling.

Pronunciation and form

Millie is pronounced MILL-ee, with two syllables and stress at the beginning. It keeps the soft ending of a traditional affectionate form even when used as the complete name. Mildred and Millicent remain historical relatives rather than longer spellings that someone named Millie must use.

Millie Bobby Brown

British actor Millie Bobby Brown became widely known through Stranger Things. In November 2018, at fourteen, she became UNICEF's youngest-ever Goodwill Ambassador. The appointment was announced on World Children's Day.

UNICEF described her role as helping bring attention to children's rights, education, safe places to learn and play, and the effects of bullying and violence. She had already supported the organization before that appointment. Her public work gives Millie a connection with both screen acting and advocacy for young people.

Millie on stage

Thoroughly Modern Millie centers on Millie Dillmount, a young woman from Kansas arriving in New York City in 1922 to begin a new life. The title places her name alongside the changes in fashion, independence, and city living that shape the musical's setting.

The Broadway production opened in April 2002. Its period setting gives Millie a distinctly earlier cultural atmosphere than the contemporary association with Brown, even though audiences encountered the stage production during the name's modern revival.

Popularity in the United States

Millie's recent American rise has been substantial. The SSA girls' series records 83 births in 2000 and 311 in 2010. By 2025 the count had reached 3,353, with a rank of 73, the strongest count and rank in the series.

Those registrations are for Millie itself. They do not include people registered as Mildred or Millicent who use it as a nickname, so the statistics capture its growing independence as a full given name.

How popular is Millie?

In 2025, Millie ranked #73 among girls in the United States, with 3,353 recorded uses. The U.S. birth records first list this spelling for girls in 1880; its largest annual count was 3,353 in 2025. Rankings count each spelling separately. They describe national use, so local familiarity can differ. The popularity chart shows whether the name has remained common, returned after a quieter period, or risen recently.