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.
| 825 | POULTON, Nicole Leah Elyse | SA | Merit | Psychology | |
| 826 | PRABU, Anjana | SA | Merit | Research Project B | |
| 827 | Prabu, Anjana | Seymour College | Glen Osmond | Gov of SA SACE Award | |
| 828 | PRIOR, Lucy Jade | SA | Merit | Psychology | |
| 829 | PUJARA, Aditya | SA | Merit | Research Project B | |
| 830 | PULLMAN, Joshua | SA | Merit | Physical Education | |
| 831 | PULPAN, Martin | SA | Merit | Business and Enterprise | |
| 832 | QUEALE, Thomas Peter | SA | Merit | General Mathematics | |
| 833 | RAGHURAM, Bharat | SA | Merit | Chemistry | |
| 834 | RAJAGOPAL, Siddarth | SA | Merit | Research Project B | |
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| 835 | RAJASEKARAN, Kiruthika | SA | Merit | English | |
| 836 | RAMOS, Komninos Connor | SA | Merit | Mathematical Methods | |
| 837 | RAMOS, Komninos Connor | SA | Merit | Research Project B | |
| 838 | RAMSAY, Maddison | SA | Merit | Research Project B | |
| 839 | RAVINDRAN, Ashwini | SA | Merit | Chemistry | |
| 840 | RAVINDRAN, Ashwini | SA | Merit | English Literary Studies | |
| 841 | RAVINDRAN, Ashwini | SA | Merit | Legal Studies | |
| 842 | RAVINDRAN, Ashwini | SA | Merit | Mathematical Methods | |
| 843 | RAVINDRAN, Ashwini | SA | Merit | Modern History | |
| 844 | RAW, Mitchell Simon | SA | Merit | Mathematical Methods | |
| 845 | RAW, Mitchell Simon | SA | Merit | Specialist Mathematics | |
| 846 | RAWAT, Aditya | SA | Merit | Research Project B | |
| 847 | RAWSON, Gracie Jean | SA | Merit | Research Project B | |
| 848 | RAYNER, Elisha Lee | SA | Merit | Child Studies | |
| 849 | REGAN, Gavin John | SA | Merit | Research Project B | |
| 850 | REJI, Joyel Joseph | SA | Merit | Research Project B | |
| 851 | REX-MCGIRR, Yonah David | SA | Merit | Performance Special Study | |
| 852 | Ricci, Sebastian | Saint Ignatius College | Athelstone | Gov of SA SACE Award | |
| 853 | RICCI, Sebastian Edward | SA | Merit | Chemistry | |
| 854 | RICCI, Sebastian Edward | SA | Merit | Physics | |
| 855 | RICE, Adam Vinod | SA | Merit | Mathematical Methods | |
| 856 | RICHARDSON, Emma Bonte | SA | Merit | English Literary Studies | |
| 857 | RICHARDSON, Emma Bonte | SA | Merit | Solo Performance | |
| 858 | RICHARDSON, Mackenzy Jayde | SA | Merit | Biology | |
| 859 | RIGBY, Dominique | SA | Merit | Drama | |
| 860 | RIMINGTON, Jessica Bella | SA | Merit | Integrated Learning A | |
| 861 | RIMMER, Brodie Samuel | SA | Merit | General Mathematics | |
| 862 | RISCHMILLER, Harry Paul | SA | Merit | Systems and Control Products I | |
| 863 | ROBERTS, Charlie Peter | SA | Merit | Workplace Practices | |
| 864 | ROBERTS, Jo Anne | SA | Merit | Biology | |
| 865 | ROBERTSON, Caitlin Lee | SA | Merit | Research Project B | |
| 866 | ROBINSON, Lucille Pearl | SA | Merit | General Mathematics | |
| 867 | ROGERS, Sophie Isabella | SA | Merit | Material Products I | |
| 868 | ROMEO, Elise | SA | Merit | Child Studies | |
| 869 | ROSENZWEIG, Izabella | SA | Merit | Physics | |
| 870 | ROSENZWEIG, Jake Matthew | SA | Merit | Systems and Control Products II | |
| 871 | ROSSETTO, Tara | SA | Merit | Research Project B | |
| 872 | Rossetto, Tara | Loreto College | Marryatville | Gov of SA SACE Award | |
| 873 | RUDIGER, Harriette Josephine | SA | Merit | Modern History | |
| 874 | RUSSELL-JARVIE, Grace Hope | SA | Merit | Research Project B | |