Declining since 2011, #8,243 for boys today.
Popularity of Mannix since 1967
Babies named Mannix per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1960s | 29 |
| 1970s | 65 |
| 1980s | 0 |
| 1990s | 6 |
| 2000s | 131 |
| 2010s | 247 |
| 2020s | 48 |
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.

