| Pronunciation | Kei |
|---|---|
| Gender | male |
| Origin | |
| Word/name | Japanese |
| Region of origin | Japanese |
| Other names | |
| Related names | Keiko Keisuke |

Kei (けい, ケイ) is a Japanese male's personal name; used increasingly as a female's personal name, as a shortening of Keiko.
Kei can be written using different kanji characters and can mean (with Wiktionary links):