| Abbreviation | Definition |
|---|---|
| KG | Kevin Gordon |
| KG | Killa Guerilla |
| KG3 | King George the Third |
| KGS | Khwaja Gulrang Seddeqi |
| KIWI | A nickname used internationally for people from New Zealand (not an acronym) |
| KJ | Karl Johan |
| KJ | Katherine Jean |
| KJ | Kathryn Jane |
| KJ | Ken, Junior |
| KJ | Kenneth James |
| KJ | Kevin James |
| KJ | Kirsten Joy |
| KK | Kirigaya Kazuto |
| KM | Kiki Marie |
| KO | Karl Otto |
| KO | Katherine Olympia |
| KOBE | King Of Basketball Enterprise |
| KP | Kitten Princess |
| KP | Krysten Patricia |
| KPK | k Praveen Kumar |