Boy’s name · American English

Cj

How to say it: SEE-JAY · /ˈsiːdʒeɪ/

Modern American initials C.J. used as given name - often short for Christopher Jr. or similar combinations.

Cj was the 3,145th most popular boys’ name in the United States in 2025, given to 27 babies (Social Security Administration). The 2020s are its busiest decade so far, its births are down about 16% in ten years, and it is projected to slip to #3,218 by 2030.

Updated · SSA 2025 data, published May 2026 · How we compute these figures

#3,145for boys in 2025
1 in 122,790US babies
27born in 2025
#3,218projected for 2030
2020sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Cj
Rank among boys’ names, 2025#3,145
Babies born in 202527
Share of births1 in 122,790
Peak decade2020s
Change over 10 years−16%
Projected rank for 2030 (estimate)#3,218

Sources: Social Security Administration (SSA). How we compute these figures.

Its life, decade by decade

Cj is a newcomer: almost all of its history is from the last forty years.

1900195020002020–25
Peak: 20 per million births, 2020s.

What goes with it

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Cj is about under 1 in 200.

Around the world

This spelling is used in English.

Ireland: #375.

Keep exploring

Find names you'll both love, starting with Cj

The one-minute style quiz.

Take the quiz

Or see the Vowel app →