| Acronym | Definition |
|---|
| KEI | Knowledge Ecology International |
| KEI | Knowledge Economy Index |
| KEI | Keithley Instruments, Inc (Solon, OH) |
| KEI | Korea Economic Institute |
| KEI | Keyword Effectiveness Index |
| KEI | Keyword Effectiveness Index (search engine optimization) |
| KEI | Kinetic Energy Interceptor (MDA program) |
| KEI | Knowledge Economy Indicators |
| KEI | Kapor Enterprises, Inc (San Francisco, CA) |
| KEI | Koadic's Endless Intellect (Everquest) |
| KEI | Kensington Eye Institute (Toronto, ON, Canada) |
| KEI | Kyiv Economics Institute |
| KEI | Koppern Equipment, Inc (Charlotte, NC) |
| KEI | Kinetic Energy Interactive |
| KEI | Kodály Educators of Iowa |
| KEI | Kulan Engineering Institution (Somalia) |