| 551 | Karagiannis, Elleni | 1 |
| 552 | Karavasili, Theo-Charis | 1 |
| 553 | Karpathios, Alexandra | 1 |
| 554 | Kasehagen, Jesse | 1 |
| 555 | Kasimidou, Theodora | 1 |
| 556 | Katsabis, Elaina | 1 |
| 557 | Kaveberg, Savannah Sunni | 1 |
| 558 | Keene, Lili Grace Sparks | 1 |
| 559 | Kemp, Allegra | 1 |
| 560 | Kemp, Eva Grace | 1 |
| |
||
| 561 | Kemp, Jeremy Stephen | 1 |
| 562 | Kempt, Mariel | 1 |
| 563 | Kennedy, Orlando | 1 |
| 564 | Keys, Sophia | 1 |
| 565 | Khanna, Shreyas | 1 |
| 566 | Kim, Do Hyun | 1 |
| 567 | Kim, Eunsu | 1 |
| 568 | Kim, Yeeun | 1 |
| 569 | King, Edward Mayo | 1 |
| 570 | Kingsland, Danielle Raye | 1 |
| 571 | Kleemann, Jorjia | 1 |
| 572 | Klose, Jessica Lee | 1 |
| 573 | Kneebone, Alice | 1 |
| 574 | Koch, Lily Grace | 1 |
| 575 | Koek, Tiffany Clare | 1 |
| 576 | Koh, Elliot Mun Hong | 1 |
| 577 | Koh, Nicholas Shi-Wen | 1 |
| 578 | Kohler, Macoy | 1 |
| 579 | Koijima, Konon | 1 |
| 580 | Kolta, Kerelos Kolta | 1 |
| 581 | Konopka, Mia Chanel | 1 |
| 582 | Kramer, Bailey Lauren | 1 |
| 583 | Kroker, Imogen | 1 |
| 584 | Kumar, Jeanquille Shanti Valerie | 1 |
| 585 | Kunninti, Praharshitha | 1 |
| 586 | Kvasniuk, Zachary | 1 |
| 587 | Kyros, Kate | 1 |
| 588 | Lam, Lai-Yin | 1 |
| 589 | Lamahewa, Thimitha | 1 |
| 590 | Lamb, Bailey | 1 |
| 591 | Lamb, Jennifer Jean | 1 |
| 592 | Lancaster, Sarah | 1 |
| 593 | Lane, Victoria Rose | 1 |
| 594 | Langfield, Bradley James | 1 |
| 595 | Langford, Ruby Grace | 1 |
| 596 | Larkin, Jack Raymond | 1 |
| 597 | Lawrence, Isaac Nicholas | 1 |
| 598 | Le, Justin Tam | 1 |
| 599 | Le, Minh Khoi Peter | 1 |
| 600 | Le, Thien An | 1 |