This is the SACE Honour Roll, listing every award, merit or prize won by South Australian SACE students in 2018, along with their school and subject details.
The report also includes significant Australian national awards and prizes such as the Australian Student Prize.
| 405 | HA, Junwoo | SA | Merit | English as an Additional Language | |
| 406 | HACKETT, Kara Lee | SA | Merit | Communication Products I | |
| 407 | HAGENUS, Whitney Drew | SA | Merit | Research Project B | |
| 408 | HALL, Charlotte Victoria | SA | Merit | Economics | |
| 409 | HAMILTON, Christopher | SA | Merit | Specialist Mathematics | |
| 410 | Hammond, Kieran | Trinity College | Evanston South | Gov of SA SACE Award | |
| 411 | HAMMOND-BROWN, Bonita Jay | SA | Merit | Mathematical Methods | |
| 412 | HAMMOND-BROWN, Bonita Jay | SA | Merit | Physics | |
| 413 | HAN, Jinsu | SA | Merit | English | |
| 414 | HAN, Jinsu | SA | Merit | Ensemble Performance | |
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| 415 | HARFORD, Jeremy Hayes | SA | Merit | Economics | |
| 416 | HARPER, Rachel Ruth | SA | Merit | Essential Mathematics | |
| 417 | HARRISON, Rebecca Zoe | SA | Merit | Psychology | |
| 418 | HARTMAN-KEARNS, Skye Peta | SA | Merit | Psychology | |
| 419 | HARTMAN-KEARNS, Skye Peta | SA | Merit | Visual Arts - Art | |
| 420 | HASSAN, Noshin Nusaiba | SA | Merit | Psychology | |
| 421 | HASSAN, Noshin Nusaiba | SA | Merit | Research Project B | |
| 422 | HASSANI, Abolfazl | SA | Merit | Integrated Learning A | |
| 423 | HAYTON, Zachariah | SA | Merit | General Mathematics | |
| 424 | HEALEY, Stella Rhianon | SA | Merit | Visual Arts - Design | |
| 425 | HEARD, Benjamin | SA | Merit | Mathematical Methods | |
| 426 | HEARD, Benjamin | SA | Merit | Specialist Mathematics | |
| 427 | HEATH, Ashleigh Kira | SA | Merit | Nutrition | |
| 428 | HEATH, Isaac Benjamin | SA | Merit | Research Project A | |
| 429 | HEGARTY, Brianna | SA | Merit | Information Processing and Publishing | |
| 430 | Hein, Amy | Cornerstone College | Mount Barker | Gov of SA SACE Award | |
| 431 | HEIN, Amy Elise | SA | Merit | General Mathematics | |
| 432 | HEIN, Jasmine Evelyn | SA | Merit | English | |
| 433 | HEIN, Jasmine Evelyn | SA | Merit | Essential Mathematics | |
| 434 | HEINICKE, Samara | SA | Merit | Research Project B | |
| 435 | HEINRICH, Emily | SA | Merit | General Mathematics | |
| 436 | HEITHERSAY, Tobias John Sinclair | SA | Merit | English | |
| 437 | HEITHERSAY, Tobias John Sinclair | SA | Merit | Visual Arts - Design | |
| 438 | HERATH, Nipun Chethaka | SA | Merit | Mathematical Methods | |
| 439 | HILDER, Dyson | SA | Merit | General Mathematics | |
| 440 | HO, Wing Man | SA | Merit | Creative Arts | |
| 441 | HO, Wing Man | SA | Merit | Visual Arts - Design | |
| 442 | HODGES, Sophie Mae | SA | Merit | Psychology | |
| 443 | HOFFMAN, Benjamin David | SA | Merit | Psychology | |
| 444 | HOGAN, Jessica Theresa | SA | Merit | Workplace Practices | |
| 445 | HOGG, Sarah Eva | SA | Merit | Biology | |
| 446 | HONG, Tiffany Thanh Nhi | SA | Merit | Physical Education | |
| 447 | HORBELT, Samantha | SA | Merit | Biology | |
| 448 | HORNSEY, Sally | SA | Merit | Research Project B | |
| 449 | HOSKING, Ella Francesca | SA | Merit | Psychology | |
| 450 | HOSKING, Joe Hugh | SA | Merit | English | |
| 451 | HOWARD, Maisie Mae | SA | Merit | English Literary Studies | |
| 452 | HOWELL, Coby Jack | SA | Merit | Research Project B | |
| 453 | HOWLETT, Kaitlyn | SA | Merit | Research Project B | |
| 454 | HREMIAS, Danielle | SA | Merit | Integrated Learning A | |