Given name & surname

Molly

Molly is used as a given name and a surname. Molly is connected with Mary.

Original IrishMáirín

Meaning & origin

Where it comes from

An origin associated with this spelling is Irish.

How it developed

Molly is used as a form of Mary.

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.

From dated birth records

Molly through the years

Babies since 1880
176,487
360 boys · 176,127 girls
Most popular year
1991
4,663 babies
2025
1,601
#196 for girls
2021–25 vs 2016–20
−16%
Easing
01,0002,0003,00018801900192019401960198020002025Highest share 1991996
Molly in U.S. Social Security birth records, 1880–2025, per million girls born. Years with fewer than five births for a sex are not published and appear as zero. Use the arrow keys to step through years.

Where it’s given

Most at home inMassachusetts, Louisiana, Connecticut
FewerMore, relative to births Not published
2025 births by state of birth. Tiles are equal-sized so small states stay visible. Highest rates: Massachusetts (57), Louisiana (39), Connecticut (26), Mississippi (20), Alabama (37).

By the numbers

In 2025, this name appeared in 1,601 U.S. birth records for girls, ranking No. 196 among girls’ names. Average annual use for girls was 16.0% lower in 2021–2025 than in 2016–2020. Its largest published annual count for girls was 4,652 in 1991. In 2025, Texas had the largest reported state-level birth count for girls with this name (136). Published U.S. population figures for this spelling include 153,463 as a first name in 2020; 250 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.

Molly’s family of names

In English usage, Molly is a diminutive of Mary. Molly has a related form in Mollie. Molly is an affectionate form of Mary.

Walk Molly’s family in the name graph

MollyMaryMolliePollyMolliMolleyMolleeMolleMollyeMolleaMollMaliMailleMáirínMolléMàiliМолли

Inner ring: nicknames and forms · outer: across languages.

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 10

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

Show 2 moreShow fewer

Across languages 6

Equivalents and cognates in other languages, plus older forms it grew from.

Similar names

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

Welsh · Nature

Morgan

“circling the bright sea; a sea dweller”

70CommonEasing

22% boys · 78% girls

Welsh

Megan

Megan is used as a given name and a surname. Megan is connected with Meg and Margaret.

52UncommonEasing

>99% girls

Irish

Keely

“a handsome man”

34RareSteady

>99% girls

Gaelic · Modern

Mackenzie

Mackenzie is used as a given name and a surname. Interpretations include “daughter of a wise leader; a fiery woman; one who is fair” and “the son of a wise leader; a fiery man; one who is fair”. These may reflect different naming traditions.

69FamiliarEasing

3% boys · 97% girls

English · Biblical

Michaela

“who is like God?” · “brook”

52UncommonEasing

>99% girls

Greek

Melissa

“bee, honey, or honeybee”

62FamiliarEasing

>99% girls

Welsh

Meghan

Meghan is a feminine given name from Welsh.

40UncommonCooling

>99% girls

Welsh · Nature

Meredith

“a great ruler; protector of the sea”

61FamiliarSteady

>99% girls

Sibling ideas

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

A brother for Molly

A sister for Molly