MallowbyNames

Mannix

MAN-iks · Derived from the Irish surname Ó Mainnín, possibly meaning 'little monk' or 'devotee of Manachán'.

2025 rank (boys)
#8,243
Babies named in 2025
9
Peak popularity
2010
2025 frequency
1 in 189,786 boys
Usually for
Boys
Trend
Declining since 2011

Declining since 2011, #8,243 for boys today.

Popularity of Mannix since 1967

Babies named Mannix per year in U.S. Social Security records.

102131198020002020Most births 2010Boys
Data table (by decade)
DecadeBoys
1960s29
1970s65
1980s0
1990s6
2000s131
2010s247
2020s48

Meaning & origin

Mannix is a rare Irish surname-name, given to approximately 1 in every 189,786 boys in the United States as of 2023 (rank 8,243). Its recorded history as a first name begins in 1967, and it reached a peak in 2010 before entering a gradual decline. Despite its low usage, the name carries a cool vintage-detective aura, likely bolstered by the 1960s television show of the same name. Its clear Irish roots connect it to a rich tradition of patronymic surnames, making it a distinctive choice for parents seeking an uncommon yet meaningful name with a straightforward sound.

Mannix is an Irish surname turned given name, anglicized from Ó Mainnín, itself a variant of Ó Manacháin, meaning 'descendant of Manachán', a personal name derived from 'manach' (monk). The name gained limited use as a first name in the United States during the 20th century, likely influenced by the popular 1960s television detective series 'Mannix'.

Mannix” around the world

Where Mannix lands in the latest official birth statistics abroad, matched to the U.S. spelling.

  • Ireland

    4

    babies in 2025

Sources: CSO Ireland (Ireland).

Nicknames & variants

Nicknames: Man

Variants: Manix

Sibling names for Mannix

Names that share Mannix's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

M is for Mannix, our favorite little boy.

M is for Mannix…”

In a Mallowby alphabet book, Mannix's letter becomes Mannix's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Mannix's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Mannix mean?
Mannix is thought to mean 'little monk' or 'descendant of Manachán', from an Irish surname with monastic roots.
How popular is the name Mannix?
Mannix is very rare. As of 2023, it ranked 8,243rd in the US, with about 1 in 189,786 births.
Is Mannix a boy's name or a girl's name?
Mannix is traditionally used as a boy's name.