| Acronym | Definition |
|---|
| KSI➣Key Source International |
| KSI➣Key Set Identifier |
| KSI➣Killed or Seriously Injured (UK road safety statisitcs) |
| KSI➣Key Solutions, Inc. (various companies) |
| KSI➣Kinetic Systems, Inc. (various locations) |
| KSI➣Knattspyrnusamband Íslands (football association of Iceland) |
| KSI➣Kovack Securities, Inc. (Ft. Lauderdale, FL) |
| KSI➣Kips Per Square Inch (engineering) |
| KSI➣Thousands of pounds per Square Inch |
| KSI➣Kyocera Solar, Inc. (Scottsdale, AZ) |
| KSI➣Kubota Systems, Inc. (Osaka, Japan) |
| KSI➣Kyoto Sustainability Initiative (Kyoto, Japan) |
| KSI➣Kriya Systems, Inc. (software company) |
| KSI➣Kommando Schwarze Infusion (German: Command Black Infusion) |
| KSI➣Knowledge, Strength, Integrity (gaming community) |
| KSI➣Kludge Sound Inc. |
| KSI➣Killing Spree Inc (gaming clan) |
| KSI➣Kali Sikaran International (martial arts) |
| KSI➣Kelly Services Incorporated |
| KSI➣Knight of the Star of India |
| KSI➣Killing Service Incorporated (gaming clan) |