Given name & surname

Billie

“having a desire to protect”·“will”·“desire”

In English use, Billie is a diminutive of William. William’s elements mean “will” or “desire” and “helmet” or “protection.” “Determined protector” is a natural interpretation of that combination. Billie is a variant of Bill. In English use, Bill carries the interpretation “the determined protector.”

Meaning & origin

What it means

In English use, Billie carries the interpretation “having a desire to protect.” In English use, Billie is a diminutive of William. William’s elements mean “will” or “desire” and “helmet” or “protection.” “Determined protector” is a natural interpretation of that combination. Billie is a variant of Bill. In English use, Bill carries the interpretation “the determined protector.”

Combines direct and name-family evidence

Where it comes from

An origin associated with this spelling is English.

How it developed

In English use, Billie is used as a variant of Billy. Billie is used as a feminine counterpart of William. In English use, Billie is a diminutive of William. The shared background comes through William: William joins the Germanic elements wil and helm. The second element began with the concrete image of a helmet and also carried the broader idea of protection.

Combines direct and name-family evidence

The story

Published U.S. birth records include this spelling as early as 1880. This is the earliest published observation available here, rather than a date for the name’s origin. In English use, Billie is a diminutive of William. The history of William gives this family its wider story. William spread widely in England after the Norman Conquest, among people beyond the Norman ruling class. William remained prominent through the Middle Ages and became a royal name in England, Germany, and the Netherlands.

Combines direct and name-family evidence

Billie through the years

Babies since 1880
135,300
31,637 boys · 103,663 girls
Most popular year
1930
4,715 babies
2025
422
#691 for girls · #6,502 for boys
2021–25 vs 2016–20
+101%
Rising fast
Boys Girls
01,0002,0003,00018801900192019401960198020002025Highest share 1930Boys 7.6Girls 254
Billie in U.S. Social Security birth records, 1880–2025, per million births of each sex. Years with fewer than five births for a sex are not published and appear as zero. Use the arrow keys to step through years.

Boys, girls and both

The balance of boys and girls given this name has shifted over time. Recent births are 3% boys.

Boys Girls
0%50%100%18801900192019401960198020002020
Five-year rolling share of U.S. births. Blank stretches had too few births to read.

Where it’s given

Most at home inNew York, California, Florida
FewerMore, relative to births Not published
2025 births by state of birth. Tiles are equal-sized so small states stay visible. Highest rates: New York (30), California (54), Florida (22), Texas (39).

By the numbers

In 2025, this name appeared in 409 U.S. birth records for girls, ranking No. 691 among girls’ names. Average annual use for girls was 104.0% higher in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 3,241 in 1930. It also appeared in 13 birth records for boys in 2025. In 2025, California had the largest reported state-level birth count for girls with this name (54). Published U.S. population figures for this spelling include 55,679 as a first name in 2020; 1,762 as a surname in 2020.

From Social Security birth records and U.S. Census name counts for this exact spelling. Other spellings are counted separately.

Billie’s family of names

In English usage, Billie is a diminutive of William. Billie has a related form in Billy. Billie is a feminine form of William.

Walk Billie’s family in the name graph

BillieBillyeByllieWilliamBillyBillBilleeBilliBilleyBilleaBilleighBilllyBilllieBilleah

Inner ring: spellings · outer: nicknames and forms.

Hover or tab through the constellation to see how each name is related. Bigger dots are names more people in the U.S. share.

Nicknames & forms 11

Diminutives, pet forms, short forms and variants used alongside the name.

Show 3 moreShow fewer

Spellings & scripts 2

The same name written differently, including transliterations into other scripts.

See also 1

Names our sources mention alongside this one. They are related in story or meaning, not forms of this name.

Appears in

Similar names

If you love Billie, these share its style, era, origin or sound, from outside its own family.

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Louise

“a famous warrior”

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Hellen

“flat rock”

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Sibling ideas

Names that share Billie’s feel without repeating its first letter or rhyming with it.

A brother for Billie

A sister for Billie