Singapore Mathematics Olympiad School Award (Category 1) 2015
| Award | Name of School |
| Gold | Anglo-Chinese School (Independent) |
| Gold | Hwa Chong Institution |
| Gold | Nanyang Girls’ High School |
| Gold | NUS High School of Mathematics and Science |
| Gold | Raffles Girls’ School (Secondary) |
| Gold | Raffles Institution |
| Silver | Maris Stella High School |
| Silver | National Junior College |
| Silver | River Valley High School |
| Silver | St Joseph’s Institution |
| Silver | Victoria School |
| Bronze | Anderson Secondary School |
| Bronze | Catholic High School |
| Bronze | Cedar Girls’ Secondary School |
| Bronze | CHIJ St Nicholas Girls’ School |
| Bronze | Chung Cheng High School (Main) |
| Bronze | Dunman High School |
| Bronze | Nan Chiau High School |
| Bronze | Nan Hua High School |
| Bronze | Ngee Ann Secondary School |
| Bronze | Swiss Cottage Secondary School |
| Bronze | Tanjong Katong Secondary School |
| Commendation | Bukit Batok Secondary School |
| Commendation | Clementi Town Secondary School |
| Commendation | Commonwealth Secondary School |
| Commendation | Crescent Girls’ School |
| Commendation | Fuhua Secondary School |
| Commendation | Jurong Secondary School |
| Commendation | Kranji Secondary School |
| Commendation | Methodist Girls’ School |
| Commendation | NPS International School, Singapore |
| Commendation | Paya Lebar Methodist Girls’ School |
| Commendation | Singapore Chinese Girls’ School |
| Commendation | Temasek Junior College |
| Commendation | Temasek Secondary School |
| Commendation | Xinmin Secondary School |
| Commendation | Zhenghua Secondary School |
| Commendation | Zhonghua Secondary School |
Singapore Mathematics Olympiad School Award (Category 2) 2015
| Award | Name of School |
| Gold | Anglo-Chinese School (Independent) |
| Gold | Hwa Chong Institution |
| Gold | Raffles Institution |
| Silver | National Junior College |
| Silver | NUS High School of Mathematics and Science |
| Silver | River Valley High School |
| Silver | Victoria Junior College |
| Bronze | Dunman High School |
| Bronze | St Andrew’s Junior College |
| Bronze | Temasek Junior College |
| Commendation | Anderson Junior College |
| Commendation | Anderson Secondary School |
| Commendation | Catholic Junior College |
| Commendation | Meridian Junior College |
| Commendation | Nan Hua High School |
| Commendation | Nanyang Junior College |
| Commendation | Pioneer Junior College |
| Commendation | St Joseph’s Institution |
| Commendation | St Joseph’s Institution International |
Singapore Mathematics Olympiad (Junior) 2015
Top 30 Individual Ranking for SMO (Junior)
A total of 3809 students from 99 schools participated in the Junior competition.
Top 10 places will be announced during SMS Prize Presentation Ceremony
| Rank | Name | School |
| 1 | Joel Tan Junyao | NUS High School of Mathematics and Science |
| 2 | Khor Jun Wei | Raffles Institution |
| 3 | Zhang Xiaorui | NUS High School of Mathematics and Science |
| 4 | Tan Wee Kean | Raffles Institution |
| 5 | Boo Tse Yang Lucas | Nanyang Primary School |
| 6 | Victor Loh Wai Kit | Raffles Institution |
| 7 | Cheng Puhua | Raffles Institution |
| 8 | Ho Li Xiong Timothy | NUS High School of Mathematics and Science |
| 9 | Ng Yu Peng | Hwa Chong Institution |
| 10 | Ang Boon Han Nathaniel | Anglo-Chinese School (Independent) |
| 11 | Ng Yangyi Aloysius | Raffles Institution |
| 12 | Tian Yao Ding | St Joseph’s Institution International |
| 13 | Seah Yuxuan | Raffles Institution |
| 14 | Zhang Yu Chi | Raffles Institution |
| 15 | Lu Ming Yuan | Bukit Batok Secondary School |
| 16 | Shen Xinyi | Raffles Institution |
| 17 | Tan Xu Chen | Raffles Institution |
| 18 | Daniel Leong Zhi Ming (Liang Zhiming) | NUS High School of Mathematics and Science |
| 19 | Goh Chee Kiat Ethan | Raffles Institution |
| 20 | Shi Cheng | Hwa Chong Institution |
| 21 | Low Choo Ray | Nanyang Primary School |
| 22 | Dai Xiang Rong | Raffles Institution |
| 23 | Keane Ng | Raffles Institution |
| 24 | Sun Longxuan | Hwa Chong Institution |
| 25 | Leong Eu-Shaun | Raffles Institution |
| 26 | Li Yuelin | NUS High School of Mathematics and Science |
| 27 | Lee Jun Long Matthew | Raffles Institution |
| 28 | Pan Liyu | Raffles Institution |
| 29 | Joshua Yip Sujun | Tanjong Katong Secondary School |
| 30 | Jeffrey Lee Chun Hean | NUS High School of Mathematics and Science |
Singapore Mathematics Olympiad (Senior) 2015
Top 30 Individual Ranking for SMO (Senior)
A total of 2357 students from 90 schools participated in the Senior competition.
Top 10 places will be announced during SMS Prize Presentation Ceremony
| Rank | Name | School |
| 1 | Bryan Wang Peng Jun | Hwa Chong Institution |
| 2 | Dylan Toh Shan Hong | NUS High School of Mathematics and Science |
| 3 | Tan Likai | Raffles Institution |
| 4 | Clarence Chew Xuan Da | NUS High School of Mathematics and Science |
| 5 | Ma Zhao Yu | Raffles Institution |
| 6 | Teo Por Loong Jacob | NUS High School of Mathematics and Science |
| 7 | Lee Ker Yang | Raffles Institution |
| 8 | Matthew Fan Xin Yu | NUS High School of Mathematics and Science |
| 8 | Ong Hong Ming Teddy | NUS High School of Mathematics and Science |
| 10 | Wang Jianzhi | Raffles Institution |
| 11 | Lee Zheng Han | NUS High School of Mathematics and Science |
| 12 | Ahnt Htoo Myat | NUS High School of Mathematics and Science |
| 13 | Lee Yong Le Isaac | Raffles Institution |
| 14 | Zhang Guangxuan | Raffles Institution |
| 15 | Zhang Yansheng | Chung Cheng High School (Main) |
| 16 | Lim Li | NUS High School of Mathematics and Science |
| 17 | Tran Nguyen Manh Thien | St Joseph’s Institution |
| 18 | Goh Hong Pei | Hwa Chong Institution |
| 19 | Gabriel Goh | NUS High School of Mathematics and Science |
| 19 | Li Chenxu | Raffles Institution |
| 21 | Nguyen Hoai Nam | Anglo-Chinese School (Independent) |
| 22 | Li Anqi | Raffles Girls’ School (Secondary) |
| 23 | Le Quang Anh | Temasek Secondary School |
| 24 | Koh Shang Hui | Hwa Chong Institution |
| 25 | Winfred Kong | Hwa Chong Institution |
| 26 | Chua Yu Xuan Jordan | Raffles Institution |
| 27 | Dinh Phuc Hung | Commonwealth Secondary School |
| 28 | Sun Yue | Raffles Girls’ School (Secondary) |
| 29 | Tran Nguyen Manh Dan | St Joseph’s Institution |
| 30 | Zhang Yaqin | River Valley High School |
Singapore Mathematics Olympiad (Open) 2015
Top 30 Individual Ranking for SMO (Open)
A total of 1810 students from 63 school participated in the Open competition.
Top 10 places will be announced during SMS Prize Presentation Ceremony
| Rank | Name | School |
| 1 | David Lin Kewei | Raffles Institution |
| 1 | Liu Yi Jia | Raffles Institution |
| 3 | Sheldon Kieren Tan | Raffles Institution |
| 4 | Ma Zhao Yu | Raffles Institution |
| 5 | Dylan Toh Shan Hong | NUS High School of Mathematics and Science |
| 6 | Clarence Chew Xuan Da | NUS High School of Mathematics and Science |
| 6 | Tan Siah Yong | Raffles Institution |
| 8 | Lee Hua Jun Eugene | Raffles Institution |
| 9 | Bryan Wang Peng Jun | Hwa Chong Institution |
| 10 | Tan Likai | Raffles Institution |
| 11 | Joel Tan Junyao | NUS High School of Mathematics and Science |
| 12 | Howe Choong Yin | NUS High School of Mathematics and Science |
| 12 | Gabriel Goh | NUS High School of Mathematics and Science |
| 14 | Matthew Fan Xin Yu | NUS High School of Mathematics and Science |
| 15 | Wang Shuwei | Hwa Chong Institution |
| 16 | Teo Por Loong Jacob | NUS High School of Mathematics and Science |
| 17 | Lee Bing Qian Ryan | Hwa Chong Institution |
| 18 | Li Anqi | Raffles Girls’ School (Secondary) |
| 19 | Lyu Liang | Hwa Chong Institution |
| 20 | Glen Lim Wei An | Raffles Institution |
| 21 | Yang Gan | Raffles Institution |
| 22 | Chua Zhe Xuan | Raffles Institution |
| 23 | Gao Yuan | Anglo-Chinese School (Independent) |
| 24 | Miao Haodong | Raffles Institution |
| 25 | Mai Le Xuan Anh | St Joseph’s Institution International |
| 26 | Khor Jun Wei | Raffles Institution |
| 27 | Le Tran Kien | National Junior College |
| 28 | Nicolas Tarino | St Andrew’s Junior College |
| 29 | Huang Han | Raffles Institution |
| 30 | Yu Letian | Hwa Chong Institution |
