The 1999 AMC was held on Tuesday 3 August.

Australian and New Zealand medallists were presented with their medals at a function at Government House, Brisbane, on Wednesday 3 November by the Governor of Queensland, Major General Peter Arnison AO.

Singapore medals were presented at a function in the Australian High Commission in Singapore by the High Commissioner, the Hon Murray McLean OAM, on Thursday 21 October.

Philippine medals were presented at a function on Wednesday 21 October at Manila Midtown Hotel by the Philippines Secretary of the Department of Science and Technology, Dr Filemon A Uriarte, Jr. He was assisted by Undersecretary Dr Rufino C Lirag, Jr and the Australian Embassy was represented by Charge d'Affaires, the Hon Nicholas Coppell.

Bulgarian Medals were presented at a ceremony at the Bulgarian Academy of Sciences on 7 December 1999 by the Australian Ambassador to Bulgaria, His Excellency Mr Ross Burns, accompanied by the Australian Honorary Consul in Sofia, Mrs Indiana Trifonova. This ceremony also saw the awarding of the 1998 medals.

AMC Medallists from the Junior, Intermediate & Senior Divisions
Brown Aaron	Northpine Christian College QLD	Year 8
Chen Fay	Somerville House QLD	Year 8
Cheong Kah Kay	Anglo-Chinese School SIN	Year 8
Chua Timothy	Xavier School PHI	Year 8
Coleman Patrick	St Peter's College SA	Year 7
Dang Thurston	Caringbah Selective High School NSW	Year 7
Dy Samuel	St Stephen's High School PHI	Year 8
Garton Thomas	Woodleigh School VIC	Year 8
Harkness Matthew*	St Andrew's Secondary School SIN	Year 8
Hitchcock Steven	Matamata College NZ	Year 8
Iyer Nithin	Sydney Grammar School NSW	Year 7
Lai Jensen	Billanook College VIC	Year 8
Lin Zongheng Wilson	Raffles Institution SIN	Year 8
Liang Feng-Yuan	St George Girls High School NSW	Year 8
Marinov Radoslav	Varna Mathematical School BUL	Year 7
Nerecena Carlo	Philippine Science High School PHI	Year 7
Ng Angus	Sydney Boys High School NSW	Year 8
Ng Jun Siang	Raffles Institution SIN	Year 8
Olesen Esper	Wauchope High School NSW	Year 8
Pinson Matthew	Cowra High School NSW	Year 7
Qin Charles	Sydney Boys High School NSW	Year 8
Sutanto David	Trinity Grammar School VIC	Year 8
Van Zetten Matthew	St Patrick's College Launceston TAS	Year 8
Zhao Zi Qing	Anglo-Chinese School SIN	Year 8
Edwards Phillip	Hale School WA	Year 10
Kwok Andrew	University High School VIC	Year 9
Li Zhen	The Chinese High School SIN	Year 10
Lin Zhixiang*	River Valley High School SIN	Year 9
McNamara Peter*	Hale School WA	Year 10
Roberts Benjamin	Toowoomba Grammar School QLD	Year 10
Tan Lit Hau	James Ruse Agricultural High School NSW	Year 10
Thai Duc	Rostrevor College SA	Year 10
Wang Ziqian*	Raffles Institution SIN	Year 9
White Gareth	Hurlstone Agricultural High School NSW	Year 9
Wu Jie	Nanyang Girls High School SIN	Year 9
Yeoh Daniel	Pembroke School SA	Year 10
Cheeseman Andrew	Mentone Grammar School VIC	Year 12
Zhechev Dimiter	Mathematical School of Gabrovo BUL	Year 11
Chu Geoffrey*	Scotch College VIC	Year 11
Freiberg Tristan*	Boonah State High School QLD	Year 12
Handley Benjamin	Logan Park High School, Dunedin NZ	Year 12
Lim Yin*	Victoria Junior College SIN	Year 11
Morrison Matthew	Malanda State High School QLD	Year 12
Ramchen Lev	Melbourne Grammar School VIC	Year 11
Sun Kevin*	James Ruse Agricultural High School NSW	Year 12
Taplin Joel	Radford College ACT	Year 12
Weng Wenrong	Melville High School, Hamilton NZ	Year 12
Wilson Julian	Dubbo Distance Education Centre NSW	Year 11
* denotes perfect score: BH Neumann certificate