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.
| 675 | MERCORELLA, Christopher | SA | Merit | General Mathematics | |
| 676 | MESSENT, Sophie | SA | Merit | Psychology | |
| 677 | MEYER, Katie | SA | Merit | English | |
| 678 | MICHOS, Arissa | SA | Merit | Business and Enterprise | |
| 679 | MICKLEY, Jackson Andrew | SA | Merit | Mathematical Methods | |
| 680 | MICKLEY, Jackson Andrew | SA | Merit | Physics | |
| 681 | MICKLEY, Jackson Andrew | SA | Merit | Specialist Mathematics | |
| 682 | MIDDLETON, Emily Kate | SA | Merit | General Mathematics | |
| 683 | MILES, Noah | SA | Merit | Communication Products II | |
| 684 | MILES, Noah | SA | Merit | Physics | |
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| 685 | MILHAM-MEYER, Angel | SA | Merit | Legal Studies | |
| 686 | MILLER, Alice Caitlin | SA | Merit | Visual Arts - Design | |
| 687 | MILOVANOVIC, Matthew | SA | Merit | Research Project B | |
| 688 | MINOPOULOS, Dion Stefon | SA | Merit | Essential Mathematics | |
| 689 | MITCHELL, Lauren | SA | Merit | Information Processing and Publishing | |
| 690 | MITTIGA, Calista | SA | Merit | Research Project B | |
| 691 | MOHAMMED, Hashim | SA | Merit | Essential English | |
| 692 | MONKLEY, Georgia Louise | SA | Merit | Communication Products I | |
| 693 | MONTEIRO, Lisha Lancy | SA | Merit | English as an Additional Language | |
| 694 | MOREY, Chelsie Metelli | SA | Merit | Visual Arts - Art | |
| 695 | MORIARTY, Patrick | SA | Merit | Physical Education | |
| 696 | MORRICE, Olivia May | SA | Merit | English | |
| 697 | MORRICE, Olivia May | SA | Merit | General Mathematics | |
| 698 | MORRIS, Chloe Bokyeong | SA | Merit | Nutrition | |
| 699 | MORRISON, Jessica Rebeccah | SA | Merit | Biology | |
| 700 | MORRISSEY, Rachael Marise | SA | Merit | Research Project B | |
| 701 | MOSEL, Parisya Peter | SA | Merit | Drama | |
| 702 | Moseley, Charlotte | Pulteney Grammar School | Adelaide | Prize: Goethe Prize | German |
| 703 | MOSELEY, Charlotte Hope Hill | SA | Merit | German (Continuers) | |
| 704 | MOSELEY, Charlotte Hope Hill | SA | Merit | Research Project B | |
| 705 | MOULARADELLIS, Victoria Alexandra | SA | Merit | Physical Education | |
| 706 | MOYLAN, Cecile Teresa | SA | Merit | General Mathematics | |
| 707 | MUECKE, Jay Peter | SA | Merit | English | |
| 708 | MUIR, Margo | SA | Merit | English | |
| 709 | MULDER, Jennifer Rose | SA | Merit | Mathematical Methods | |
| 710 | MULLAN, Meleri Kate | SA | Merit | Integrated Learning B | |
| 711 | MUNGER, Samuel | SA | Merit | Mathematical Methods | |
| 712 | MUNRO, Julia | SA | Merit | Research Project B | |
| 713 | MURPHY, Irulan Claire Prowse | SA | Merit | Mathematical Methods | |
| 714 | MURPHY, Kiara | SA | Merit | Modern History | |
| 715 | Murphy, Kiara | St Aloysius College | Adelaide | Prize: Annie Montgomerie Martin Prize and Medal for Modern History | Modern History |
| 716 | MURPHY, Neave | SA | Merit | Research Project B | |
| 717 | MUSSARED, William Keele | SA | Merit | Modern History | |
| 718 | MYLCHREEST, Chelsea | SA | Merit | Health | |
| 719 | NAUGHTON, Angus James | SA | Merit | Research Project B | |
| 720 | NEALE, Catherine | SA | Merit | Drama | |
| 721 | NEALE, Catherine | SA | Merit | General Mathematics | |
| 722 | NEHME, Hanna | SA | Merit | Biology | |
| 723 | NEHME, Hanna | SA | Merit | Mathematical Methods | |
| 724 | NEUMANN, Silvia Renae | SA | Merit | Workplace Practices | |