Jack
Jack developed through medieval forms Jackin and Jankin as a familiar form of John. The reference also notes possible early influence from French Jacques. It is now used independently, so the spelling does not tell whether a particular pet was named after someone called John.
- Meaning
- A medieval familiar form of John
- Name or word origin
- English
Sources and meaning notes
The immediate name history is documented; the longer John name and the independent nickname are not collapsed into a direct English translation.
- Behind the Name: Jack The name form, its documented usage and the specific name-history relationships described here
References checked .
Catalog grouping: Male. This is a browsing label and does not restrict which cats can use the name.
Popularity in cited datasets
Each position below belongs to its publisher’s sample and time period. These are not iCatNames registration counts or a combined ranking.
| Dataset scope | Position | Source |
|---|---|---|
| U.S. cat names — top 100 | #27 | Rover catalog (checked 2026-10-26; undated) |
An undated catalog checked in 2026 is not a 2025 annual result. Historical reports keep their published period. Source records on this page were checked on 2026-10-26.
Compare the checked ranking snapshotsNames in similar collections to Jack
These entries have source references and overlap with this name in the site’s editorial collections. The overlap does not measure pet-owner preferences or prove a shared linguistic origin.