Mannix
A masculine name derived from the French surname 'Mannix', meaning "one deserving of happiness".
Name Census estimates that about 504 living Americans carry the first name Mannix. The name is used almost exclusively for boys. The average person named Mannix today is around 21 years old, and the year with the single highest number of Mannix births was 2010 (31 babies).
This page is the full Name Census profile for Mannix. Below you will find a gender breakdown showing how the name splits between male and female registrations, a year-by-year popularity chart stretching back to 1880, decade-level totals, the top US states for this name, its meaning and etymology, and a set of frequently asked questions with data-backed answers.
People living today
504
~ 1 in 680,068 Americans
Peak year
2010
31 babies that year
Average age
21
years old
2024 SSA rank
#8,700
Tracked since 1967
Popularity
Mannix: popularity over time
The SSA tracks Mannix from the 1960s through to the 2020s, spanning 6 decades of birth certificate data. The biggest single decade for the name was the 2010s, with 247 total registrations. Usage has dropped considerably from its 2010s peak. The most recent decade brought in only a fraction of the registrations that the name once attracted.
Babies born per year
Decades
Mannix by decade
The table below breaks the full SSA timeline into ten-year windows. Each row shows how many male and female babies were given the name Mannix during that decade, along with a combined total. This is useful for spotting eras where the name surged or retreated.
Geography
Where Mannix' live
Origin
Meaning and history of Mannix
The given name Mannix has its origins in the Celtic cultures of ancient Britain and Ireland. It is derived from the old Celtic word "mannog," which means "little monk" or "little friar." This suggests that the name may have been initially used to refer to young men who were training to become monks or friars in Christian monasteries during the early medieval period.
In its earliest recorded form, the name was spelled "Mannoc" or "Manaug." It is believed to have been in use as a personal name among Celtic-speaking communities in Wales, Cornwall, and Brittany as early as the 6th century AD. Some of the earliest known individuals with this name include Saint Mannoc, a 6th-century Welsh monk and missionary, and Saint Maunoc, a 6th-century Breton abbot and founder of the Abbey of Saint-Méen.
The name Mannix gained wider recognition during the Middle Ages, particularly in Ireland and Scotland. One notable bearer of the name was Mannix O'Brien, a 12th-century Irish king of Thomond. Another was Mannix MacQuillan, a 14th-century Irish chieftain and Lord of Roe in Ulster.
As the name spread across Europe, it was sometimes adapted to local languages and spelling conventions. For example, in Italy, it became "Mannuccio" or "Mannucci," as seen in the case of Mannuccio Salviati (1490-1553), an Italian Renaissance banker and patron of the arts.
In the English-speaking world, the name Mannix gained popularity in the 19th and early 20th centuries. One of the most famous individuals with this name was Daniel Mannix (1864-1963), an Irish-born Catholic Archbishop of Melbourne, Australia, who was a prominent figure in the labor and anti-conscription movements.
Other notable bearers of the name Mannix include:
1. Joseph Mannix (1913-1998), an American actor best known for his role in the television series Mannix.
2. John Mannix (1837-1918), an American politician and lawyer who served as the 14th Lieutenant Governor of Connecticut.
3. William Mannix (1957-present), an American basketball player and coach.
4. Mannix Flynn (1952-present), an Irish artist, writer, and politician who served as a member of the Dublin City Council.
5. Mannix Daniel (1957-present), a Sri Lankan-born Australian actor and comedian.
People
Mannix + last name combinations
How many people share a full name with Mannix as the first name? Click a combination below to see the estimate, or search any pairing.
Related
Other names starting with M
Other first names starting with M with a similar number of bearers.
FAQ
Mannix: questions and answers
How many people in the U.S. are named Mannix?
Name Census puts the figure at roughly 504 living Americans. We arrive at this by taking every SSA birth registration for Mannix going back to 1880 and adjusting each cohort for expected survival using CDC actuarial life tables. The result is an age-weighted living-bearer count, not a raw birth total. That works out to about 1 in 680,068 US residents.
Is Mannix a common name?
We classify Mannix as "Very Rare". It ranks above 84.6% of all first names in the SSA dataset by living bearers. Across the full history of the data, 517 babies have been registered with this name.
When was Mannix most popular?
The single biggest year for Mannix was 2010, when 31 babies received the name. The fact that the average living Mannix is about 21 years old gives you a rough sense of which era contributed the most bearers who are still alive today.
Is Mannix a male name?
Yes, 100.0% of people registered as Mannix in the SSA data are male. You can see the full per-sex comparison in the gender distribution section above, which includes the latest year rank, birth count, and peak year for each sex.
Where does this data come from?
First-name figures come from the Social Security Administration's national baby name files, which cover every name on a birth certificate from 1880 to 2024. Living-bearer estimates layer in CDC actuarial life tables broken out by sex to account for mortality. The population baseline (342,754,338) is the Census Bureau's latest national estimate. You can read the full calculation on our methodology page.