First president of the KEMS: Taek-gu Yoon (Korea Cancer Center Hospital)
2nd president of the KEMS: Wan Kyoo Cho (College of Natural Sciences, Seoul National University)
3rd president of the KEMS: Wan-gyu Cho (College of Natural Sciences, Seoul National University)
4th president of the KEMS: Jung Kyu Lim (College of Medicine, Seoul National University)
5th president of the KEMS: Sang Sup Lee (College of Pharmacy, Seoul National University)
2nd president of the KSOT: Chan-Woong Park (College of Medicine, Seoul National University)
3rd / 6th president of the KSOT / KEMS: Nak Doo Kim (College of Pharmacy, Seoul National University)
The Korea-Japan Toxicology Conference (New Castle Plaza Hotel, Nagoya, Japan)
4th president of the KSOT / KEMS: Hyen Sam Kang (College of Natural Sciences, Seoul National University)
5th president of the KSOT / KEMS: Sang-Dai Park (College of Natural Sciences, Seoul National University)
The 1993 Korea-Japan International Symposium and Conference
6th president of the KSOT / KEMS: Il Moo Chang (College of Pharmacy, Seoul National University)
7th president of the KSOT / KEMS: Kyu Hwan Yang (Korea Advanced Institute of Science and Technology)
The Asia Toxicology Conference
8th president of the KSOT / KEMS: Young Soon Lee (College of Veterinary Medicine, Seoul National University)
2nd president of the Asian Society of Toxicology: Il-moo Jang (College of Pharmacy, Seoul National University)
The 2nd Asia Toxicology Conference (Hyatt Regency Hotel, Jeju, Korea)
9th president of the KSOT / KEMS: Myung-Hee Chung (College of Medicine, Seoul National University)
10th president of the KSOT / KEMS: Young Chul Kim (College of Pharmacy, Seoul National University)
11th president of the KSOT / KEMS: Hai Won Chung (Graduate School of Public Health, Seoul National University)
12th president of the KSOT / KEMS; Sang-Seop Han (Safety Evaluation Lab, Korea Chemical Research Institute)
Hosted the XIII International Congress of Toxicology
13th president of the KSOT / KEMS: Jin-Ho Chung (College of Pharmacy, Seoul National University)
14th president of the KSOT/KEMS; Byung-Mu Lee (College of Pharmacy, Sungkyunkwan University)
15th president of the KSOT/KEMS; Sang Geon Kim (College of Pharmacy, Seoul National University)
The XIII International Congress of Toxicology
16th president of the KSOT / KEMS; Myung-Haing Cho (College of Veterinary Medicine, Seoul National University)
The 7th International Congress of Toxicology of Asian Society of Toxicology (ASIATOX 2015)
17th president of the KSOT / KEMS; Hoonjeong Kwon (College of Human Ecology, Seoul National University)
The 12th International & 5th Asian Congress on Environmental Mutagen (ICEM 2017)
18th president of the KSOT / KEMS; Byung-Hoon Lee (College of Pharmacy, Seoul National University)
KSOT and JSOT sign a MOU for academic cooperation
19th president of the KSOT / KEMS; Jung-Duck Park (College of Medicine, Chung-Ang University)
20th president of the KSOT / KEMS; Young-Jin Chun (College of Pharmacy, Chung-Ang University)
21st president of the KSOT / KEMS; Kyung-Chul Choi (College of Veterinary Medicine, Chungbuk National University)