Kase

Meaning & origin

Kase is a modern streamlined spelling of Casey, a name with Irish roots meaning 'vigilant'. First recorded in the U.S. as a given name in 1983, Kase rose steadily in popularity, reaching its peak in 2018. Since then, its usage has been falling, but it remains in regular use. In 2025, it ranked 1115th nationally with a 1-in-8896 rate of use among newborn boys. The name has seen the highest relative popularity in Idaho, Arkansas, and Louisiana, suggesting regional appeal. As a phonetic alternative to Casey, Kase offers a simple, strong sound that fits contemporary naming trends favoring streamlined spellings. Its history is tied to the broader adoption of Irish surnames as first names in America, and it remains a viable choice for parents seeking a name that is both familiar and slightly distinctive.

Kase is a modern spelling variant of Casey, which itself originates from the Irish Gaelic surname Ó Cathasaigh meaning 'descendant of Cathasach', a personal name derived from 'cathasach' meaning 'vigilant' or 'watchful'. The name gained popularity in the United States as a masculine given name from the 20th century onward, with the Kase spelling emerging as a streamlined alternative with no change in pronunciation.