Millie is an English feminine name, generally explained as a pet form of Mildred, from Old English words meaning "gentle" and "strength," so "gentle strength." Many name dictionaries also treat it as a short form of Millicent, from Germanic roots meaning "strong in work," and a few connect it with Camilla. It is pronounced MIL-ee, the same in American and British English, and Milly is a common variant spelling.
Its best-known bearer today is the British actress Millie Bobby Brown, who played Eleven in Stranger Things and starred in the Enola Holmes films. The name also belongs to Millie Perkins, who made her screen debut as Anne Frank in the 1959 film The Diary of Anne Frank, and to the title character of the 1960s musical Thoroughly Modern Millie.
In the United States the name was long uncommon: in 1996 only 34 girls received it and it ranked 3,361st. It returned to the top 1,000 in 2008, when 261 babies were given the name, and has climbed sharply since. In 2025 it ranked 73rd, with 3,353 babies, the highest position it has ever held.
| Millie Bobby Brown is a British actress and producer best known for playing Eleven in Stranger Things with Emmy nominations and for starring in the Godzilla films while producing and leading the Enola Holmes movies and Damsel. |
| Millie Perkins is an American retired actress best known for her debut as Anne Frank in The Diary of Anne Frank in 1959 and for supporting roles in the 1966 Westerns The Shooting and Ride in the Whirlwind directed by Monte Hellman. |
| Millie Brown is an English performance artist known for vomit-based art who rose to prominence through collaborations with Lady Gaga and is a founding member of the London WOWOW Collective, beginning her career at 17 in Berlin. |
| Millie Brady - Camilla Eve Brady is an English actress and model best known for playing Aethelflaed in the Netflix drama The Last Kingdom and appearing in Pride and Prejudice and Zombies and the Apple TV Plus series Surface. |
| Millie and Christine McKoy were African American conjoined twin entertainers who overcame slavery and exploitation to tour the world as celebrated singers and dancers. |
| Millie Dunn Veasey was an American World War II veteran who served from 1942 to 1945 in the Women's Auxiliary Army Corps and the Women's Army Corps. |
| Millie Bailey - Vivian Mildred Bailey was a World War II veteran and pioneering African American officer in the Womens Army Corps who commanded a Womens Colored Detachment served as a Social Security division director and raised funds for education health and service members. |
| Millie Lovelock - Millicent Ellen Lovelock is a New Zealand singer songwriter and guitarist known as Repulsive Woman, formerly of the Dunedin bands Astro Children and Trick Mammoth, whose 2019 debut Relief won Best Independent Debut at the 2020 Taite Music Prize. |
| Millie Gibson is an English actress best known for playing Kelly Neelan in Coronation Street and Ruby Sunday in Doctor Who. |
| Millie Mai McKenzie is an English professional wrestler best known for WWE NXT UK as Emilia McKenzie, with appearances in Defiant Wrestling, Progress Wrestling, Revolution Pro Wrestling, and Sendai Girls Pro Wrestling. |
| Born enslaved in Virginia, Millie Tunnell lived to 111 and, after 100, became a local celebrity known for her sharp memory, corncob pipe, threading a needle without glasses at 110, and recognition as the oldest woman in Jamaica, Queens. |
| Millie Chen is a Taiwanese-born Canadian artist, educator, and writer based in Buffalo who is a professor of art at the University at Buffalo. |
| Millie Corretjer, born in 1974, is a Puerto Rican singer and actress who was married to boxer Oscar De La Hoya and is the granddaughter of poet and nationalist leader Juan Antonio Corretjer. |
| Millie Gertrude Peacock, the first woman elected to the Parliament of Victoria, won the seat of her late husband Sir Alexander Peacock in 1933 and served a single term until 1935. |
| Millie Munro is a former Silver Ferns netballer who played 41 times for New Zealand, including at the 1975 and 1979 World Championships. |