• 1966 Honorary Fellow, American Institute of Architects.
  
  Seidler with wife Penelope (in foreground) receiving an Honorary Fellowship from the American Institute of Architects, Denver, Colorado, 1966.
• 1968 Pan Pacific Citation, American Institute of Architects.
  
  Receiving the Pan Pacific Citation of the AIA in Hawaii, 1968.
• 1970 Life Fellow, Royal Australian Institute of Architects
• 1972 Officer, Order of British Empire.
  
  With brother Marcell at the investiture as an Officer of the Order of the British Empire, Government House, Sydney, 1972.
• 1976 Gold Medal, Royal Australian Institute of Architects
• 1979 Fellow, Australian Academy of Technological Sciences
• 1984 Member, Academie d’Architecture de France.
  
  Becoming a member of the Academie d’Architecture in Paris, 1984.
• 1987 Companion, Order of Australia.
  
  Receiving Australia’s highest honour, the Companion of the Order of Australia, from the Governor-General, Sir Ninian Stephens, 1987.
• 1987 Academician, International Academy of Architecture, Sofia
• 1988 Honorary Doctor of Laws, University of Manitoba, Canada
• 1989 Gold Medal, City of Vienna, Austria.
  
  Receiving the Gold Medal of the City of Vienna, 1989.
• 1991 Honorary Doctor of Letters, Univ. of Technology, Sydney
• 1996 Austrian Cross of Honour 1st Class, for Art & Science
• 1996 Royal Gold Medal, Royal Institute of British Architects
• 1999 Honorary Doctor of Science, Univ. of NSW
• 2000 Honorary Doctor of Science in Architecture, Univ. of Sydney
• 2001 Honorary Member of the Israel Institute of Architects and Town Planners
• 2002 The Golden Decoration for Services to the Viennese State

See also: Harry Seidler visual chronology
Harry Seidler 4 Decades Visual Biography
4.45Mb pdf scan of pages 388-425 of the Book ‘Harry Seidler Four Decades of Architecture’