| OSN 2024 | 79 | Refinus Nathanael Sunur | SMAK Frater Don Bosco Lewoleba | | 0 | 0 | 5 | 8 | 35 | | 48 | |
| OSN 2023 | 94 | Nathalia Dwiyanti Talnoni | SMAN 4 Kupang | | 0 | |
| OSN 2022 | 96 | Paula Vebrianti Kewa Payon Riantobi | SMAN 1 Nubatukan | 0 | 0 | 0 | 0 | 0 | | | 0 | |
| KSN 2021 | 95 | Benedikta Alfionita Moi | SMA Regina Pacis Bajawa | 0 | 0 | 0 | 0 | 0 | 0 | | 0 | |
| KSN 2020 | 94 | Joshua Aprivaldis Toelle | SMAN 3 Kupang | 0 | 4 | 4 | 14 | 4 | 0 | | 26 | |
| OSN 2019 | 56 | Putu Andhika Pratama | SMAN 3 Kupang | 12 | 14 | 67 | 14 | 0 | 15 | | 122 | |
| OSN 2018 | 82 | Adrian Arisgraha | SMA Dian Harapan Kupang | 0 | 0 | 0 | 0 | 0 | 0 | | 0 | |
| OSN 2017 | 71 | Eugene Brigita Lauw | SMAK Giovanni Kupang | 0 | 0 | 5 | 13 | 8 | 12 | | 38 | |
| OSN 2016 | 83 | Gregorius Yoseph Laba | SMAN 1 Nubatukan | 0 | 17 | 0 | 0 | 0 | 0 | | 17 | |
| OSN 2015 | 66 | Maylan Triana Pidi | SMAN 3 Kupang | 12 | 0 | 14 | 0 | 14 | 16 | | 56 | |
| OSN 2014 | 83 | Destine B. Salim | SMAN 3 Kupang | 0 | 0 | 0 | 0 | 20 | 18 | 0 | 0 | 38 | |
| OSN 2013 | 87 | Ramadhan Lenggu Ramli | SMAN 3 Kupang | 18 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 18 | |
| OSN 2012 | 59 | Rivaldi Bilaut | SMAN 3 Kupang | 0 | 20 | 0 | 15 | 30 | 0 | 21 | 18 | 104 | |
| OSN 2011 | 81 | Rivaldi Bilaut | SMAN 3 Kupang | | 158 | |
| OSN 2010 | 108 | Rudy Apriandi Balla | SMAN 3 Kupang | | 42 | |
| OSN 2009 | 104 | Andreas B. Cundawan | SMAK St. Fransiskus Xaverius Ruteng | | 120 | |
| OSN 2008 | 90 | Elliot Caesar Tandoyo | SMAK Waikabubak | | 1403.16 | |
| OSN 2007 | 89 | Thanyssersya L. Akal | SMAN 1 Kalabahi | | 585.6 | |
| OSN 2006 | | Stefania Pratita Nahak | | | | |
| OSN 2005 | 86 | Vanessa Yuliana T. Ujan | SMAN 2 Nubatukan | 0 | 0 | 0.00 | 0.00 | 0.00 | 0 | | 863 | |