Nameling

Caillou

Boy · ka-YOO · French

Caillou is a boys' name of French origin, meaning “pebble”. Too few babies were given it in the latest year to rank.

What does Caillou mean?

French: French word caillou

“pebble”

French word for a pebble, best known as the name of the preschool hero of the Canadian children's series Caillou.

Say it
ka-YOO

Is Caillou a girl's or a boy's name?

Caillou is a boys' name.

How popular is Caillou in the US?

No boys in the US were given it in 2025, or too few to be listed. Its busiest year was 2001, with 35 boys. It first appears in the records in 2001.

Half of all the boys named Caillou in the US since 1880 were born between 2003 and 2010, the years shaded on the chart below.

2001Busiest: 35 in 20012019
Caillou in the US, year by year
YearBoysRank
20195#12,138
20180–
20175#12,241
20167#9,659
201510#7,486
20140–
20138#8,784
201214#5,995
20116#10,801
201013#6,353
200914#6,091
200818#5,063
200713#6,259
200619#4,671
200522#4,057
200416#5,002
200324#3,621
200223#3,665
200135#2,676

Names like Caillou

Names given in the same years and the same naming tradition, with a similar sound.

Names related to Caillou

More French names