MallowbyNames

Cosby

KOZ-bee · Of uncertain origin; possibly from an Irish surname meaning 'victory'.

Peak popularity
1917
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Cosby since 1908

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

4812192019602000Most births 1917GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1900s50
1910s543
1920s1365
1930s053
1940s022
1950s018
1960s05
1970s06
1980s00
1990s00
2000s00
2010s00
2020s00

Meaning & origin

Cosby first appeared in U.S. birth records in 1914 and saw a brief period of use during the 1910s, reaching its peak rank in 1917. After the 1910s, the name fell out of common use and has remained extremely rare ever since, with no data for recent decades, indicating it is not currently in regular use. The name's trajectory is stable at near-zero usage. While it has seen no revival, the name is strongly associated with the surname of the famous entertainer Bill Cosby, which may influence perceptions. Cosby has not been recorded in any top state data, reflecting its historical rarity. As a given name, it carries the style of old Irish surname names but remains an uncommon choice.

Cosby is derived from an Irish surname, an Anglicized form of the Gaelic Ó Cósbhaigh, meaning 'descendant of Cósbhach', where Cósbhach may mean 'victorious'. The name was brought to prominence in the United States through the popularity of entertainer Bill Cosby in the late 20th century, though it has seen limited use as a given name.

Nicknames & variants

Nicknames: Coz

Variants: Crosby

Sibling names for Cosby

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

Sisters: Molly, Clara, Nora, Hazel, Ruby

Brothers: Leo, Otis, Hugo, Finn, Jasper

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

C is for Cosby, our favorite little boy.

C is for Cosby…”

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

Make Cosby's book

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

Questions parents ask

What does the name Cosby mean?
Cosby is of uncertain origin but may derive from an Irish surname meaning 'victory'.
How popular is Cosby today?
Cosby is extremely rare today. It has not ranked in the top 1000 since the 1910s and no recent data.
Is Cosby a boy or girl name?
Cosby is traditionally a boy's name, though it could be used for any gender.