| Name | Functions  | Event Dates | Events | Resources | ||
|---|---|---|---|---|---|---|
| Søren Iversen | Director | 1988 - 1993 | 2 | 1 | ||
| Eric Inman | Director | 2012 | 1 | |||
| Donald W. Ilko | Director | 1986 | 1 | |||
| Rainer Iwersen | Director | 1980 | 1 | |||
| Saburo Izumino | Director | 1966 | 1 | |||
| Cristian Ioan | Director | 2005 | 1 | 1 | ||
| Brian Ingram | Director | 2006 | 1 | |||
| Udoka Ihentuge Chisimdi | Director | 2002 | 1 | |||
| Jean-Claude Idée | Director | 2006 | 2 | |||
| Ernst Immich | Director | 1920 | 1 | |||
| Naoji Iwata | Director | 1958 | 1 | |||
| David B. Itkin | Director | 1932 - 1951 | 6 | |||
| John Izon | Director | 1943 - 1948 | 4 | |||
| Jules Irving | Director | 1971 | 1 | 1 | ||
| Vali Ioniță | Director | 2005 | 1 | |||
| Alan Ingram | Director | 1971 | 1 | |||
| Gottfried Iffland | Director | 1973 | 1 | |||
| Sándor Imre | Director | 1924 - 1927 | 2 | |||
| Joza Ivakić | Director | 1917 | 1 | |||
| Germán Ivancic | Director | 2015 | 1 | |||
| V. Ivanov | Director | 1964 | 1 | |||
| Tancred Ibsen | Director | 1963 | 1 | |||
| Laurence Iseli | Director | 2018 | 2 | |||
| Jérôme Imard | Director | 2015 | 1 | |||
| Alessandro Idonea | Director | 2024 | 1 | |||
| Sally Ingrey | Designer | 1984 | 1 | |||
| Jason Ions | Designer | 2002 | 1 | |||
| Kisaku Ito | Designer | 1928 - 1950 | 5 | |||
| V. Izenberg | Designer | 1940 | 1 | |||
| Neil Irish | Designer | 1999 | 30 | |||
| Milad Ishak | Designer | 1978 | 1 | |||
| Sheila Ingham | Designer | 2001 | 1 | |||
| Yoko Isonuma | Designer | 2008 | 1 | |||
| Yasuhiro Ishii | Designer | 1967 | 1 | |||
| Lili Izsák | Designer | 2012 | 1 | 1 | ||
| John Iacovelli | Designer | 2000 - 2010 | 3 | |||
| Masako Ito | Designer | 2006 - 2010 | 18 | |||
| Kei Ishihara | Designer | 2009 | 1 | |||
| Miho Ishii | Designer | 2016 | 1 | |||
| Tomoyuki Ikeda | Designer | 2010 | 1 | |||
| Kim Il-joon | Designer | 2012 | 1 | |||
| Diana Ioan Popov | Designer | 1972 | 1 | |||