| WRIGHT, Andrew William Banasick ACTIVE | Secretary | 29 Sep 2025 | | | | 333, Three D Systems Cir, Rock Hill, Sc, 29730, United States |
| GRAVES, Jeffrey ACTIVE | Director | 29 Aug 2025 | | United States | April 1961 | 333, Three D Systems Circle, Rock Hill, Sc 29730, United States |
| ALMQUIST, Gordon Leonard RESIGNED | Secretary | 23 Sep 1991 | 01 May 1997 | | | 19331 Vintage Street, Northridge, California 91324, Usa |
| COHEN, Michael Geoffrey RESIGNED | Secretary | 31 Mar 1998 | 27 Nov 2000 | | | 26 Court House Gardens, London, N3 1PX |
| FERRIER, Ed RESIGNED | Secretary | 01 May 1997 | 31 Mar 1998 | | | 25071 Green Mill Avenue, Santa Clarita, Los Angeles, 91321, Usa |
| KAFTAL, Edwin J Joseph RESIGNED | Secretary | | 23 Sep 1991 | | | 506 Birmingham Road, Burbank, California 91504, FOREIGN, Usa |
| LANGFIELD, David James RESIGNED | Secretary | 14 Jul 2008 | 29 Feb 2020 | | | 19, Piggottshill Lane, Harpenden, Hertfordshire, AL5 1LG, England |
| PELOPIDA, Mark Ernest RESIGNED | Secretary | 28 Sep 2007 | 15 Jul 2008 | | | 18 Green View Close, Bovingdon, Hemel Hempstead, Hertfordshire, HP3 0LE |
| SAMRA, Sarbjit Singh RESIGNED | Secretary | 27 Nov 2000 | 02 Aug 2002 | | | 25 Saint Andrews Close, Shepperton, Middlesex, TW17 8QJ |
| TAYLOR, Malcolm James RESIGNED | Secretary | 02 Aug 2002 | 28 Sep 2007 | | | 1 The Maynards, Broom, Biggleswade, Bedfordshire, SG18 9EU |
| TOLMAY, Hendricus RESIGNED | Secretary | 01 May 2020 | 09 Sep 2024 | | | 14, Mardleywood, Welwyn, AL6 0UX, England |
| ALMQUIST, Gordon Leonard RESIGNED | Director | 23 Sep 1991 | 01 May 1997 | | November 1949 | 19331 Vintage Street, Northridge, California 91324, Usa |
| AMICK, Stephen Douglas RESIGNED | Director | 23 Sep 1991 | 07 Jan 1994 | | August 1950 | 29117 Marilyn Drive, Canyon Country, California 91351, FOREIGN, Usa |
| AUSTEN, Peter David RESIGNED | Director | 19 Mar 2001 | 26 Apr 2002 | United Kingdom | May 1954 | Pippins, Popes Lane, Cookham Dean, Berkshire, SL6 9NY |
| BALANSON, Richard, Dr RESIGNED | Director | 12 May 1997 | 31 May 1999 | | May 1949 | 27800 N Mcbean Pkwy No 125, Valencia California 91354, Usa, FOREIGN |
| BAUMGARTNER, Robert Joseph RESIGNED | Director | 04 Feb 1998 | 07 Apr 2000 | | March 1950 | Berger-Kreuf St 16, Munchen 81735, Bavaria Germany, FOREIGN |
| BRETT, Peter Hans RESIGNED | Director | 07 Jan 1994 | 31 May 1994 | | February 1939 | Rostocker Strasse 3, Ober Ram Stadt, 64372, Germany |
| CHANTRILL, Andrew Charles Duncan RESIGNED | Director | 07 May 1993 | 27 May 1998 | | April 1955 | 22 Christchurch Close, St Albans, Hertfordshire, AL3 5NT |
| COHEN, Michael Geoffrey RESIGNED | Director | 31 Mar 1998 | 27 Nov 2000 | | May 1957 | 26 Court House Gardens, London, N3 1PX |
| CREECH, Jeffrey Donell RESIGNED | Director | 30 Apr 2024 | 29 Aug 2025 | United States | September 1962 | 333, Three D Systems Circle, Rock Hill, Sc 29730, United States |
| DOTSCH, Hans-Erich RESIGNED | Director | 13 Oct 1994 | 20 Nov 1995 | | February 1947 | Zur Laubenheimer Home 6, 55129 Mainz, Germany, FOREIGN |
| FLAHARTY, Grant RESIGNED | Director | 01 Feb 1999 | 28 Jul 2003 | | August 1961 | 7620 Spigno Place, Agua Dulce, Ca 91390, Usa |
| FREED, Raymond Samuel RESIGNED | Director | | 23 Sep 1991 | | March 1927 | 19601 Romar Street, Northridge, California 91324, FOREIGN, Usa |
| GEYER, Eugen RESIGNED | Director | 02 Feb 1996 | 31 Mar 1998 | | May 1949 | Langenlohe 22, Wiesenthau, D-91369, Germany |
| GLOYNE, Edward Michael RESIGNED | Director | 07 Nov 1991 | 07 May 1993 | | October 1946 | 18 Cravells Road, Harpenden, Hertfordshire, AL5 1BD |
| GRACE JR, Robert Mitchell RESIGNED | Director | 05 Jan 2005 | 27 Apr 2012 | United States | February 1947 | 10821 Coyle Circle, Charlotte, North Carolina 28277, Usa |
| GREGOIRE, Damon Joseph RESIGNED | Director | 17 Sep 2007 | 12 Dec 2014 | Usa | March 1968 | 2 Meadowsweet Lane, Greenville, Sc 29615, Usa |
| HULL, Theodore Alton RESIGNED | Director | 12 Dec 2014 | 09 Jun 2015 | Usa | June 1957 | 333, Three D Systems Circle, Rock Hill, South Carolina, Usa |
| JOHNSON, Andrew RESIGNED | Director | 27 Apr 2012 | 30 Apr 2024 | United States | October 1974 | 628, Bracket Street, Fort Mill, South Carolina, 29708, United States |
| JONES, Christopher John RESIGNED | Director | 14 Jul 2008 | 01 Jun 2011 | United Kingdom | January 1960 | 85 Butterfield Road, Wheathampstead, Hertfordshire, AL4 8PX |
| JONES, Fred Richard RESIGNED | Director | 05 Jan 2005 | 01 Mar 2007 | | November 1947 | 26430 N. Valley Oak Lane, Valencia, California 91381, FOREIGN, Usa |
| KAFTAL, Edwin J Joseph RESIGNED | Director | | 23 Sep 1991 | | February 1932 | 506 Birmingham Road, Burbank, California 91504, FOREIGN, Usa |
| LANGFIELD, David James RESIGNED | Director | 08 Jun 2011 | 29 Feb 2020 | England | March 1974 | 2nd Floor,West & South Wing, The Mayland Building, 200 Maylands Avenue, Hemel Hempstead Industrial Estate, Hemel Hempstead, Hertfordshire, HP2 7TG, England |
| MCALEA, Kevin Patrick RESIGNED | Director | 25 Mar 2002 | 05 Jan 2005 | | January 1959 | 24595 Town Centre Drive, 3307, Valencia, California 91355, FOREIGN, Usa |
| SAMRA, Sarbjit Singh RESIGNED | Director | 04 Jun 1997 | 02 Aug 2002 | | January 1957 | 25 Saint Andrews Close, Shepperton, Middlesex, TW17 8QJ |
| SCHMIT, Richard Peter RESIGNED | Director | 01 Nov 2000 | 28 Jul 2003 | Netherlands | August 1960 | Jan Van Nassaustraat 12, The Hague, 2596 Bt, The Netherlands |
| SELZER, Ervin James RESIGNED | Director | 04 Dec 2000 | 28 Jul 2003 | | December 1963 | 3251 Mesaloa Lane, Pasadena, California, 91107, Usa |
| SIMS, Arthur B. RESIGNED | Director | 20 Nov 1995 | 05 Jan 2000 | | December 1937 | 875 Gold Spring Place, Westlake Village, Ca 91361, California, Usa, FOREIGN |
| STYKA, David Robert RESIGNED | Director | 09 Jun 2015 | 27 Feb 2017 | United States | January 1962 | 333, Three D Systems Circle, Rock Hill, South Carolina, Usa |
| TAYLOR, Malcolm James RESIGNED | Director | 02 Aug 2002 | 28 Sep 2007 | England | January 1963 | 1 The Maynards, Broom, Biggleswade, Bedfordshire, SG18 9EU |
| WHITE, G Peter RESIGNED | Director | 26 Aug 2003 | 15 Oct 2004 | | July 1940 | 24668 Brighton Drive, Unit C, Valencia, California 91355, FOREIGN, Usa |