MallowbyNames

Cay

kay · Rejoice, or a variant of the name Kay

Peak popularity
1955
Usually for
Girls
Trend
Holding steady

Holding steady.

Popularity of Cay since 1939

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

13253819401960198020002020Most births 1955Girls
Data table (by decade)
DecadeGirls
1930s7
1940s34
1950s143
1960s57
1970s0
1980s0
1990s0
2000s0
2010s0
2020s0

Meaning & origin

Cay is a short, simple name that has seen modest use as a variant of Kay. It was first recorded in 1939 and reached its peak usage in 1955, though it has never ranked in the national top 1000. The name has remained stable in usage over the decades, with no significant revival. Its lack of top state associations suggests a broad but sparse distribution. As a name with flexible spelling and a soft sound, Cay appeals to parents looking for a brief yet distinctive choice. The trajectory shows consistent minimal use, making it a rare but not unfamiliar option.

Cay is likely a variant of Kay, which has multiple origins. Kay may derive from the Welsh name Cai, or from the Greek name Katherine meaning 'pure'. Alternatively, it can be a short form of names like Kaya. As a given name, Cay has been in occasional use since the early 20th century, often as a feminine variant.

Nicknames & variants

Variants: Kaye, Caye, Kai, Kay

Sibling names for Cay

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

Sisters: Rae, Mae, Lea, Faye, Nia

Brothers: Jay, Ray, Cole, Blake, Drew

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

C is for Cay, our favorite little girl.

C is for Cay…”

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

Make Cay's book

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

Questions parents ask

What does the name Cay mean?
Cay is likely a variant of Kay, which can mean 'rejoice' (from Welsh) or 'pure' (from Katherine).
Is Cay currently popular?
Cay does not rank in the top 1000 names for any recent year; its peak year was 1955.
Is Cay a boy or girl name?
Cay is usually considered a girl's name, though it can be unisex.