President

• 2011 - 2012Michael Adams, USA
• 2008 - 2011Barham Madain Ayub, Chile
• 2005 - 2008Pornchai Mongkhonvanit, Thailand
• 2002 - 2005Ingrid Moses, Australia
• 1999 - 2002Sven Caspersen, Denmark
• 1996 - 1999Donald Gerth, United States
• 1993 - 1996Kan Ichi Miyaji, Japan
• 1990 - 1993Rafael Catagena, Puerto Rico
• 1987 - 1990Luis Garibay, Mexico
• 1984 - 1987Nibhond Sasidhorn, Thailand
• 1981 - 1984¹Leland Miles, United States
• 1974 - 1981Young Seek Choue, Korea
• 1971 - 1974Young Seek Choue (Acting)², Korea
• 1971Rocheforte Weeks³, Liberia
• 1964 - 1971Peter Sammartino, United States

¹The charter of IAUP was rewritten in 1978 to place a term limit on the President.
²Young Seek Choue was elected Vice-President of IAUP in 1971 and became Acting President when Rocheforte Weeks resigned.
³Soon after Rocheforte Weeks of Liberia was elected as the second President of IAUP in June 1971, the President of Liberia, William Tubman, died in office. The new President of Liberia chose Weeks to be Foreign Minister. Rocheforte Weeks accepted and resigned as IAUP President.

Secretary-General

• 2008 - 2011Heitor Gurgulino de Souza, Brazil
• 2005 - 2008Álvaro Romo de la Rosa, Mexico
• 2002 - 2005James McWha, Australia
• 1999 - 2002Jef Van der Perre, Belgium
• 1996 - 1999Maurice Harari, United States
• 1993 - 1996Yukiyasu Harano, Japan
• 1990 - 1993Álvaro Romo de la Rosa, Mexico
• 1987 - 1990Álvaro Romo de la Rosa, Mexico
• 1984 - 1987Charoen Khantawongs, Thailand
• 1981 - 1984William Allen, United States
• 1974 - 1981Won Sul Lee, Korea
• 1971 - 1974Won Sul Lee, Korea

Treasurer

• 2008 - 2011José Rodríguez, Chile
• 2005 - 2008Suchart Uphatam, Thailand
• 2002 - 2005Denise Bradley, Australia
• 1999 - 2002Michael Daxner, Germany
• 1996 - 1999Robert Jones, United States