| Abbreviation | Definition |
|---|---|
| JH | Dr. Joe Harrington |
| JLA | Joseph L. Albritton |
| JM | Joseph Matti |
| JO | Joe Orders |
| JP | Johnny Pasko |
| JR | Jie Rong, piano teacher |
| JRR | James Richard Robert |
| JRS | Jovito R. Salonga |
| JVK | Jørgen Vig Knudstorp |
| JWY | John Watts Young, Astronaut |
| KA | Kristin Armstrong |
| KC | Kylee Calvert |
| KEAT | Keats |
| KH | Koot Humi |
| KIT | Kitboga |
| KJU | King Jong Un |
| KKB | Kim Ki-Bum |
| KKR | Kohlberg Kravis Roberts |
| KKR | Korringa Kohn Rostocker |
| KP | Katy Perry |