Declining since 1985.
Popularity of Cassy since 1947
Babies named Cassy per year in U.S. Social Security records.
Data table (by decade)
| Decade | Girls |
|---|---|
| 1940s | 12 |
| 1950s | 46 |
| 1960s | 121 |
| 1970s | 240 |
| 1980s | 790 |
| 1990s | 527 |
| 2000s | 210 |
| 2010s | 50 |
| 2020s | 0 |
Meaning & origin
Cassy is a short form of Cassandra that gained independent use as a given name in the United States starting around 1947. Its peak popularity occurred in 1986, but since then it has been on a steady decline, matching a broader trend away from -ie and -y diminutive names. Today, Cassy is an uncommon choice, reflecting a preference for the more traditional spelling Cassie. The name carries a classic Greek mythological legacy but feels thoroughly modern in its clipped form.
Cassy originated as a diminutive of the Greek name Cassandra, which is derived from "kassandra" (possibly meaning "shining upon man") or from "kekasmai" (to excel) combined with "aner" (man). In Greek mythology, Cassandra was a Trojan princess blessed with prophecy but cursed that no one would believe her. The short form Cassy (with various spellings) became popular as an independent given name in English-speaking countries in the mid-20th century.
“Cassy” around the world
Where Cassy lands in the latest official birth statistics abroad, matched to the U.S. spelling.
France
55
babies in 2024
Sources: INSEE (France).
Nicknames & variants
Nicknames: Cass
Sibling names for Cassy
Names that share Cassy's style, for a brother or sister.
