Timeline
| Year | President | Congress in | WITFOR in | Foundation of | Special Group | Affiliate Members | Number of Members |
| 1959* | H. Aiken* | Paris; France * | TC1 | 15 | |||
| 1962 | I. Auerbach | Munich; Germany | TC2 and TC3 | 20 | |||
| 1965 | I. Auerbach | New York; USA | 25 | ||||
| 1968 | A. Speiser | Edinburgh; UK | TC4 | IAG | 28 | ||
| 1971 | A. Dorodnicyn | Ljubljana; Yugoslavia | TC5 and TC6 | 33 | |||
| 1974 | H. Zemanek | Stockholm; Sweden | TC7 and TC8 | 36 | |||
| 1977 | R. Tanaka | Toronto; Canada | TC9 and TC10 | IMIA | IAPR | 37 | |
| 1980a | P. Bobillier | Tokyo; Japan | IASC | ||||
| 1980b | P. Bobillier | Melbourne; Australia | ICCC | ||||
| 1983 | P. Bobillier | Paris; France | TC 11 | EUROMICRO | 44 ((49)) | ||
| 1986 | K. Ando | Dublin; Ireland | FACE and IJCAI | 45 ((58)) | |||
| 1989 | A. Goldsworthy | San Francisco; USA | TC12 and TC13 | ||||
| 1992 | B. Sendov | Madrid; Spain | |||||
| 1994 | B. Sendov | Hamburg; Germany | |||||
| 1995 | K. Bauknecht | ||||||
| 1996 | K. Bauknecht | Canberra; Australia | |||||
| 1998 | P. Bollerslev | Vienna; Austria and Budapest; Hungary | |||||
| 2000 | P. Bollerslev | Beijing; China | |||||
| 2001a | R. Aiken | ||||||
| 2001b | W. Grafendorfer | ||||||
| 2002 | K. Brunnstein | Montreal; Canada | TC14 | ||||
| 2003 | K. Brunnstein | Vilnius; Lithuania | |||||
| 2004 | K. Brunnstein | Toulouse; France | |||||
| 2005 | K. Brunnstein | Gaborona; Botswana | |||||
| 2006 | K. Brunnstein | Santiago; Chile | |||||
| 2007 | B. van Solms | Addis Ababa; Ethiopia | |||||
| 2008 | B. van Solms | Milan; Italy | |||||
| 2009 | B. van Solms | Hanoi; Vietnam | |||||
| 2010 | L. Strous | Brisbane; Australia | 47 ((50)) | ||||
| 2011 | L. Strous | 4 | 48 | ||||
| 2012 | L. Strous | Amsterdam, NL | Delhi, India | 4 | 49 | ||
| 2013 | L Strous | 4 | 44 | ||||
| 2014 | L Strous | 4 | 44 | ||||
| 2015 | L. Strous | Daejeon, Korea | 4 | 42 | |||
| 2016 | M. Hinchey | San Jose, Costa Rica | 4 | 42 | |||
| 2017 | M Hinchey | 4 | 42 | ||||
| 2018 | M.Hinchey | Poznan, Poland | 40 | ||||
| 2019 | M.Hinchey | 38 |
* Conference Chairman
Sources
Up to 1986: H. Zemanek: A Quarter Century of IFIP (Page S3), UPDATED
1989 onwards: K. Brunnstein, E. Dundler (1990-2017)