Past presidents
| No | Date | Name | Organisation |
| 1 | 1967 - 1973 | M L Magoon |
Central Tuber Crops Research Institute, Kerala, India |
| 2 | 1973 - 1979 | Dr D G Coursey |
Tropical Products Institute, London, UK |
| 3 | 1979 - 1983 | D L Plucknett |
University of Hawaii |
| 4 | 1983 - 1985 | S Sadik |
International Potato Center, P.O Box 2416, Cairo, Egypt |
| 5 | 1985 -1991 | K Caeser |
Technical University of Berlin, Germany |
| 6 | 1991 - 1997 | S K Hahn |
International Institute of Tropical Agriculture, Ibadan, Nigeria |
| 7 | 1997 - 2003 | Dr N H Poulter |
Natural Resources Institute, University of Greenwich, UK |
| 8 | 2003 - 2012 | Prof A Westby |
Natural Resources Institute, University of Greenwich, UK |
Past Vice Presidents
| No | Date | Name | Organisation |
| 1 | Dr M Akoroda | University Ibadan, Nigeria |
Past Secretary/Treasurers
| No | Date | Name | Organisation |
| 1 | 1984 | Dr L Wickham | |
| 2 | 1984 - 2012 | Prof Conrad Bonsi | Tuskegee University, USA |
Past Councillors for Publications
| No | Date | Name | Organisation |
| 1 | 2000 - 2003 | Prof Andrew Westby | Natural Resources Institute, UK |
| 2 | 2003 - 2012 | Prof Keith Tomlins | Natural Resources Institute, UK |
Past Councillors for Africa
| No | Date | Name | Organisation |
| 1 | 1991 - 2003 | Dr J Otoo | CRI, Ghana |
Past Councillors for West Africa
| No | Date | Name | Organisation |
| 1 | 2003 - 2012 | Prof M Akoroda | University Ibadan |
Past Councillors for East and Southern Africa
| No | Date | Name | Organisation |
| 1 | 2009 -2013 | Dr Gorrettie Ssemakula | NaCRRI, Uganda |
Past Councillors for East Asia
| No | Date | Name | Organisation |
| 1 | 2003 | Dr K Komaki | Council for Science and Technology Policy, Japan |
| 2 | 2003 - 2009 | Dr Reinhardt Howler | CIAT, Thailand |
Past Councillors for South and South-East Asia
| No | Date | Name | Organisation |
| 1 | 2006 | Dr S Edison | CTCRI, India |
| 2 | 2006 - 2012 | Dr Naskar | CTCRI, India |
Past Councillors North America/Europe
| No | Date | Name | Organisation |
| 1 | Dr N Alvarez |
Past Councillors South America
| No | Date | Name | Organisation |
| 1 | Dr M Cereda | ||
| 2 | 2000 - 2009 | Dr William Roca | CIP, Peru |
| 3 | 2009 - 2012 | Dr. Juan Carlos Pérez | CIP, Peru |
| 4 | 2012-2018 | Dr Clair Hershey | CIAT, Columbia |
Past Councillors the Caribbean
| No | Date | Name | Organisation |
| 1 | Dr L Wickham |
ISTRC Council Meeting (ISTRC 2000, Tsukuba, Japan): (left to right sitting) Chandra, Poulter, Wickham, Otoo. (standing) Westby, Edison, Komaki, Akoroda. (Alvarez and Cereda not pictured)