| Year | Country | Student Captain | Student 2 | Student 3 | Student 4 | Student 5 | Result |
| 2003 | Sweden | Andrew Russell | Andrew Kim | Christopher Peacock | Jacob Thomson | N/A | Bronze |
| 2004 | Australia | Taiki Yanagishima | Pieta Brown | Rory Bennett | Jeffrey Young | Christopher Blake | Certificate |
| 2005 | Switzerland | Christopher Blake | William Balfour | Maurice Chai | Jeffrey Young | Jonathan Frasse | Bronze |
| 2006 | Slovakia | William Balfour | Timothy Giffney | Keshav Nahar | Paul Wood-Stotesbury | Howe Mao | Bronze |
| 2007 | S. Korea | Howe Mao | Timothy Giffney | Ben Kornfeld | Joe Tsai | Ben Paterson | Gold |
| 2008 | Croatia | Ben Paterson | Jingcheng Jed Bian | Yang Gao | Donald White | Graeme Finnie | Gold |
| 2009 | China | John Chen | Max Fergusson | Stanley Roache | George Zhang | Gamma Potaka | Gold |
| 2010 | Austria | Tony Yuen | Yufei Chen | David Xie | Jennifer Randle | Evan Simmers | Gold |
| 2011 | Iran | No team | was sent | from New | Zealand to | IYPT in Iran | N/A |
| 2012 | Germany | Howell Fu | Jesse Zhang | Matthew Harvey | Oliver Hughes | Kaylie Potaka | Bronze |
| 2013 | Ch. Taipei | Oliver Hughes | Anthony Greer | Lily Mason-Mackay | Jackson Beagley | Jared Lee | Silver |
| 2014 | England | Francesca Templer | Ivan Jin | Stanley Sarkies | Scott Liu | Luke Porteus | Silver |
| 2015 | Thailand | Jack Tregidga | Catherine Pott | Tess Breitenmoser | Matthew Randle | Nicholas Lam | Bronze |
| 2016 | Russia | Byung Hoon Cho | Carlos Aguilera Cortes | Sang Wook Kim | Catherine Pot | Jack Tregidga | Silver |
| 2017 | Singapore | Otis Rea | Jonathan Chan | Isobel Bremner | Eric Caufmann | Finnegan Messerli | Silver |
| 2018 | China | Finnegan Messerli | Zuni Preece | Ensai August | Luke Roeven | Zoë Danger Mansell | Bronze |
| 2019 | Poland | Sophie Mance | Shunxing Daniel Shi | Sidhaarth Kumar | John Chen | Amy Cui | Silver |
| 2020 | Online | Heather Harper | Nathan Chen | Christine Li | Hanbo Xie | Xavier Yin | N/A |
| 2021 | Online | Yash Bhatia | Ryan Bright | Ari Geor | Tommy Thomson | Joy (Jingyi) Chen | N/A |
| 2022 | Online | Benjy Smith | Michael Feng | Ethan Fung | Atom Gush | Nelson Huang | N/A |
| 2023 | Online | Tait Keller | Ethan Huang | Ramanujan Madhusudhan | Vibhaa Sharma | Sean Wang | N/A |
| 2024 | Hungary | Matthew McKee | Belle Yin | Emilio Gray | Alison Power | Charlie li | Bronze |
| 2025 | Sweden | Jason Toa | Alan Chen | Audrey Kung | Julia Sung | Kayden Liu | Commended |
Students in blue have gone on to win the Prime Minister’s future scientist prize.