| 251 | Gabinskiy, Idan | Templestowe College | Templestowe Lower | Mathematical Methods | 45 |
| 252 | Gan, Wen Xuan | Suzanne Cory High School | Werribee | Mathematical Methods | 43 |
| 253 | Gao, Albert | Scotch College | Hawthorn | Mathematical Methods | 45 |
| 254 | Gao, Dean | Caulfield Grammar School Wheelers Hill | Wheelers Hill | Mathematical Methods | 43 |
| 255 | Gao, James Lequan | Melbourne Grammar School | Melbourne | Mathematical Methods | 43 |
| 256 | Gao, Jun Lan | St Albans Secondary College | St Albans | Mathematical Methods | 42 |
| 257 | Gao, Roy | Victorian College of the Arts Secondary School | Southbank | Mathematical Methods | 47 |
| 258 | Gao, Tianlang | Xavier College | Kew | Mathematical Methods | 41 |
| 259 | Gao, Ziqi | Camberwell Grammar School | Canterbury | Mathematical Methods | 40 |
| 260 | Garana, Abdalla Mohammed | Suzanne Cory High School | Werribee | Mathematical Methods | 42 |
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| 261 | Gaudey, Constance Marie Lucie | Glen Eira College | Caulfield East | Mathematical Methods | 40 |
| 262 | Gautam, Ayaan | John Monash Science School | Clayton | Mathematical Methods | 40 |
| 263 | Ge, Roger Fangzhong | Melbourne High School | South Yarra | Mathematical Methods | 42 |
| 264 | Ge, Shiyu | Melbourne Girls Grammar | South Yarra | Mathematical Methods | 43 |
| 265 | Geddes, Angus Malcom | Scotch College | Hawthorn | Mathematical Methods | 40 |
| 266 | Georges, William Lachlan | Camberwell Grammar School | Canterbury | Mathematical Methods | 42 |
| 267 | Giado, Ameera | Kardinia International College | Bell Post Hill | Mathematical Methods | 45 |
| 268 | Giaimo, Luca Achille | Xavier College | Kew | Mathematical Methods | 41 |
| 269 | Giannopoulos, Billy | Northcote High School | Northcote | Mathematical Methods | 48 |
| 270 | Gibson, Bailey Reginald Robin | St Kevins College | Toorak | Mathematical Methods | 41 |
| 271 | Gibson, Harry | Billanook College | Mooroolbark | Mathematical Methods | 40 |
| 272 | Gibson, Thomas Edmund | Carey Baptist Grammar School | Kew | Mathematical Methods | 43 |
| 273 | Gigas, Adam Daniel | Melbourne High School | South Yarra | Mathematical Methods | 41 |
| 274 | Gillespie, Benjamin Mark | Brunswick Secondary College | Brunswick | Mathematical Methods | 40 |
| 275 | Girotra, Arjun | Nossal High School | Berwick | Mathematical Methods | 41 |
| 276 | Givoni, Eden | Bialik College | Hawthorn | Mathematical Methods | 46 |
| 277 | Glenk, Hayden | Tintern Grammar | Ringwood East | Mathematical Methods | 41 |
| 278 | Goel, Gaatha | Ivanhoe Grammar School Plenty | Doreen | Mathematical Methods | 40 |
| 279 | Goh, Brian Shen Wei | John Monash Science School | Clayton | Mathematical Methods | 50 |
| 280 | Goh, George Kawauchi | Melbourne Grammar School | Melbourne | Mathematical Methods | 43 |
| 281 | Goh, Ruth Yu En | MacRobertson Girls High School | Melbourne | Mathematical Methods | 41 |
| 282 | Gokulanathan, Madhav | Melbourne High School | South Yarra | Mathematical Methods | 42 |
| 283 | Goldenberg, Mitch Abraham | Bialik College | Hawthorn | Mathematical Methods | 43 |
| 284 | Goldin, Eran Ziv | McKinnon Secondary College | McKinnon | Mathematical Methods | 42 |
| 285 | Gong, Danny Ven Zhen | Caulfield Grammar School Wheelers Hill | Wheelers Hill | Mathematical Methods | 40 |
| 286 | Gonzalez Arias, Kevin | Lakeview Senior College | Caroline Springs | Mathematical Methods | 42 |
| 287 | Goodswen, Daniel James Huy | Glen Waverley Secondary College | Glen Waverley | Mathematical Methods | 40 |
| 288 | Gorzen, Alexander Jan | Caulfield Grammar School Wheelers Hill | Wheelers Hill | Mathematical Methods | 41 |
| 289 | Gotmaker, Hannah | St Michaels Grammar School | St Kilda | Mathematical Methods | 45 |
| 290 | Govindaraj, Srisaran | Casey Grammar School | Cranbourne East | Mathematical Methods | 44 |
| 291 | Goyal, Aaron | Penleigh and Essendon Grammar School | Keilor East | Mathematical Methods | 44 |
| 292 | Graham, Liam George | Blackburn High School | Blackburn | Mathematical Methods | 40 |
| 293 | Green, Robert Henryk | Kew High School | Kew East | Mathematical Methods | 41 |
| 294 | Griffiths, Oliver James Henry | Ivanhoe Grammar School Ridgeway | Ivanhoe | Mathematical Methods | 43 |
| 295 | Grigoletto, Alessandra | Our Lady of Mercy College | Heidelberg | Mathematical Methods | 44 |
| 296 | Groth, Lachlan Chung-Yen | Melbourne High School | South Yarra | Mathematical Methods | 48 |
| 297 | Gu, Qingyi | Albert Park College | Albert Park | Mathematical Methods | 45 |
| 298 | Gu, Ruijia | Glen Waverley Secondary College | Glen Waverley | Mathematical Methods | 44 |
| 299 | Gu, Yunxin | Highvale Secondary College | Glen Waverley | Mathematical Methods | 40 |
| 300 | Gu, Ziyu | Haileybury Ningbo Li Hui Li High School | Ningbo, China | Mathematical Methods | 40 |