There are 48 mathematicians whose last name begin with ONG.
| Ong, Arlene | King's College London | 2006 |
| Ong, Beng-Seong | Texas A&M University | 2006 |
| Ong, Benjamin | Simon Fraser University | 2007 |
| Ong, Boon | Queen's University at Kingston | 1977 |
| Ong, Boon-Hua | University of California, Berkeley | 1978 |
| Ong, Boon-Wee | University of Rochester | 1998 |
| Ong, Chap-Liong | University of Minnesota - Twin Cities | 1994 |
| Ong, Cheng | Australian National University | 2005 |
| Ong, Chia Rui | University of Tokyo | 2019 |
| Ong, Chong | University of California, Berkeley | 1973 |
| Ong, Darren | Rice University | 2014 |
| Ong, Frank | University of California, Berkeley | 2018 |
| Ong, Hock | University of Toronto | 1973 |
| Ong, Hong Choon | ||
| Ong, Irene | University of Wisconsin-Madison | 2007 |
| Ong, James | Universität Potsdam | 2007 |
| Ong, John | University of Virginia | 1998 |
| Ong, Joon | University of British Columbia | 2003 |
| Ong, K. | University of Toronto | 1974 |
| Ong, Kay | University of Texas at Austin | 1992 |
| Ong, Kiah Wah | Indiana University | 2017 |
| Ong, Kian Chuan | University of Nottingham | 2017 |
| Ong, Kok Leong | Nanyang Technological University | 2003 |
| Ong, Luke | University of London | 1988 |
| Ong, Mei Fang | Universität Kaiserslautern | 2004 |
| Ong, Michael | State University of New York at Stony Brook | 1984 |
| Ong, Ping-Zen | University of California, San Diego | 1991 |
| Ong, Pio | University of California, San Diego | 2022 |
| Ong, Shaun | University of Oxford | 2019 |
| Ong, Shien Jin | Harvard University | 2007 |
| Ong, Sien-An | Technische Universiteit Eindhoven | 2004 |
| Ong, Sim Heng | ||
| Ong, Sing-Cheong | Dalhousie University | 1979 |
| Ong, Sing Poen | Technische Universiteit Delft | 1959 |
| Ong, Soon Sheng | Nanyang Technological University | 2014 |
| Ong, Wan-Meng | McMaster University | 1978 |
| Ong, Yong Zheng | National University of Singapore | 2023 |
| Ong, Zhi Peng | National University of Singapore | 2022 |
| Ongardanunkul, Pornpilai | Boston College | 2003 |
| Ongaro, Jared | Stockholm University | 2014 |
| Ongay-Larios, Fernando | Universidad Nacional Autónoma de México (UNAM) | 2000 |
| Ongay Valverde, Ivan | University of Wisconsin-Madison | 2020 |
| Ongena, Steven | University of Oregon | 1995 |
| Ongenae, Veerle | Katholieke Universiteit Leuven | 1998 |
| Ongie, Gregory | The University of Iowa | 2016 |
| Ongkiehong, Leo | Technische Universiteit Eindhoven | 1960 |
| Ongong'a, Elvice | Mälardalens högskola | 2021 |
| Ongun, Mevlude | Süleyman Demirel University | 2004 |