This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2021, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 449 | Henderson, Chloe | Salisbury High School | Salisbury North | Gov of SA SACE Award | |
| 450 | Henkel, Justin Paul | SA | Merit | Research Project B | |
| 451 | Highcock, Mason | SA | Merit | Material Solutions | |
| 452 | Hill, Annabelle | SA | Merit | Ancient Studies | |
| 453 | Hill, Jack Samuel | SA | Merit | Digital Communication Solutions | |
| 454 | Hinton, Alexandra Jane | SA | Merit | Psychology | |
| 455 | Hislop, Emma | SA | Merit | Research Project B | |
| 456 | Hislop, Emma | Eynesbury Senior College | Adelaide | Gov of SA SACE Award | |
| 457 | Hislop, Tara | SA | Merit | English Literary Studies | |
| 458 | Ho, Alanna Ying-Yi | SA | Merit | Research Project B | |
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| 459 | Ho, Brendan Jun-Xiong | SA | Merit | Chemistry | |
| 460 | Ho, Brendan Jun-Xiong | SA | Merit | Mathematical Methods | |
| 461 | Ho, Brendan Jun-Xiong | SA | Merit | Research Project B | |
| 462 | Ho, Tran Yen Phi | SA | Merit | Vietnamese (Background Speakers) | |
| 463 | Hodges, Carl Thomas | SA | Merit | Chemistry | |
| 464 | Hodges, Carl Thomas | SA | Merit | English | |
| 465 | Hodges, Carl Thomas | SA | Merit | Research Project B | |
| 466 | Hodgkiss-Roberts, Kara | SA | Merit | English | |
| 467 | Hodgkiss-Roberts, Kara | SA | Merit | Society and Culture | |
| 468 | Hogan, Lucy | SA | Merit | General Mathematics | |
| 469 | Hohn, Hannah | SA | Merit | Outdoor Education | |
| 470 | Holland, Adam James | SA | Merit | Research Project B | |
| 471 | Holroyd, Mia | SA | Merit | Research Project B | |
| 472 | Honeychurch, Tahlia | SA | Merit | Integrated Learning A | |
| 473 | Hong, Trinity | SA | Merit | Research Project B | |
| 474 | Hosking, Thomas David | SA | Merit | Chemistry | |
| 475 | Hosking, Thomas David | SA | Merit | Mathematical Methods | |
| 476 | Hosking, Thomas David | SA | Merit | Physics | |
| 477 | Huang, Dinih | SA | Merit | Music Performance - Ensemble | |
| 478 | Huang, Dinih | SA | Merit | Music Performance - Solo | |
| 479 | Huang, Yen-Shuen | SA | Merit | Mathematical Methods | |
| 480 | Hughes, Niamh | SA | Merit | Information Processing and Publishing | |
| 481 | Humble, Lily Dawn | SA | Merit | English | |
| 482 | Hutchins, Jack | SA | Merit | Religion Studies | |
| 483 | Hutchins, Jack | SA | Merit | Research Project B | |
| 484 | Huynh, Amy | SA | Merit | Chemistry | |
| 485 | Huynh, Amy | SA | Merit | Research Project B | |
| 486 | Huynh, Caitlin Han | SA | Merit | Chemistry | |
| 487 | Huynh, Caitlin Han | SA | Merit | Physics | |
| 488 | Huynh, Caitlin Han | SA | Merit | Specialist Mathematics | |
| 489 | Huynh, Nguyen Xuan Nien | SA | Merit | Vietnamese (Background Speakers) | |
| 490 | Huynh, To Nhu Sonia | SA | Merit | Health and Wellbeing | |
| 491 | Ielasi, Stephanie Alyse | SA | Merit | Workplace Practices | |
| 492 | Inglis, Hayley Jane | SA | Merit | Mathematical Methods | |
| 493 | Ingram, Molly Grace | SA | Merit | General Mathematics | |
| 494 | Ingram, Molly Grace | SA | Merit | Psychology | |
| 495 | Iqbal, Ahsan | SA | Merit | Chemistry | |
| 496 | Iqbal, Ahsan | SA | Merit | Research Project B | |
| 497 | Isaacs, Mitchell Colin | SA | Merit | General Mathematics | |
| 498 | Ismail, Daniel | SA | Merit | Health and Wellbeing | |