| Akio Maki | Director | 24 Jul 2001 | 14 May 2003 | Japanese | 81 years |
| Akira Mitsuyasu | Director | 23 Mar 2005 | 1 May 2008 | Japanese | 77 years |
| Akito Nozawa | Director | 1 Apr 2019 | 31 Mar 2023 | Japanese | 56 years |
| Daniel Nikolas Smith | Secretary | 23 Mar 2005 | 13 Dec 2005 | British | - |
| Eizo Nakatsukasa | Director | 27 May 2004 | 23 Mar 2005 | Japanese | 75 years |
| Ernest Nicholas John Oxenham Miller | Director | 21 Dec 1999 | 1 Jun 2004 | British | 77 years |
| Hideaki Nagashima | Director | 1 May 2008 | 1 Feb 2011 | Japanese | 62 years |
| Hideaki Nagashima | Director | 1 Nov 2013 | 1 Apr 2014 | Japanese | 62 years |
| Hidenori Nomi | Director | 1 Apr 2014 | 30 Apr 2017 | Japanese | 58 years |
| Hiroki Katoh | Director | 18 Jun 2020 | 1 May 2025 | Japanese | 49 years |
| Hiroshi Machidera | Director | 1 Feb 2011 | 31 Mar 2012 | Japanese | 64 years |
| Hisayoshi Ojima | Director | 22 May 2007 | 23 Feb 2010 | Japanese | 70 years |
| Ikuya Hirano | Director | 12 May 2014 | 31 Mar 2016 | Japanese | 63 years |
| Imtiyaz Jim Rahaman | Director | 20 Aug 2003 | 15 Oct 2003 | British | 54 years |
| Isamu Akiyama | Director | 18 Apr 2006 | 17 Apr 2009 | Japanese | 67 years |
| James Bowman Wanless | Director | 12 Jun 1998 | 8 Dec 2004 | British | 78 years |
| Jason Frank | Director | 1 Feb 2011 | 1 Nov 2013 | Canadian | 55 years |
| Jaspal Calotier | Director | 2 Jan 2001 | 27 May 2004 | British | 65 years |
| Jaspal Calotier | Secretary | 14 Dec 2001 | 27 May 2004 | British | - |
| John Glancy | Director | 2 Jan 2001 | 13 Apr 2004 | British | 57 years |
| John Hakemian | Director | 21 Dec 1999 | 26 Jun 2002 | American | 87 years |
| John Stewart Fellows | Secretary | 11 Dec 2005 | 31 Mar 2022 | British | - |
| Kazuhiro Nakano | Director | 12 May 2014 | 26 Apr 2016 | Japanese | 59 years |
| Kiyoshi Yamaguchi | Director | 15 Oct 2003 | 18 Apr 2006 | Japanese | 69 years |
| Mark Lynott | Director | 26 Apr 2016 | 30 Apr 2018 | British | 51 years |
| Masataka Akiyoshi | Director | 1 Jul 2021 | 3 Apr 2025 | Japanese | 49 years |
| Michael Alastair George Nicholson | Director | 21 Dec 1999 | 30 Sept 2003 | British | 75 years |
| Micky Ishida | Director | 1 May 2017 | 18 Jun 2020 | Japanese | 58 years |
| Mitsugu Katou | Director | 22 May 2007 | 1 Feb 2011 | Japanese | 53 years |
| Mitsutaka Ishida | Director | 14 May 2003 | 23 Jan 2007 | Japanese | 58 years |
| Naoto Akiyama | Director | 25 Feb 2010 | 1 Apr 2014 | Japanese | 66 years |
| Richard Paul Green | Director | 19 Mar 2004 | 28 Feb 2005 | British | 76 years |
| Robert Edward Gordon-blacker | Secretary | 12 Jun 1998 | 5 Jul 1999 | British | - |
| Robert Edward Gordon-blacker | Secretary | 24 Jan 2000 | 14 Dec 2001 | British | - |
| Robert Michael Gough | Director | 2 Jan 2001 | 3 Dec 2001 | British | 66 years |
| Shinji Yokomizu | Director | 2 Jan 2001 | 19 Mar 2004 | Japanese | 72 years |
| Shuichi Kato | Director | 1 Apr 2012 | 31 Mar 2016 | Japanese | 61 years |
| Shuichi Okazaki | Director | 19 Mar 2004 | 22 May 2007 | Japanese | 72 years |
| Shuji Hori | Director | 29 Nov 2012 | 1 Apr 2014 | Japanese | 65 years |
| Steven Blackshaw | Secretary | 5 Jul 1999 | 24 Jan 2000 | British | - |
| Steven Blackshaw | Director | 23 Mar 2005 | 31 Mar 2017 | British | 66 years |
| Steven Blackshaw | Secretary | 27 May 2004 | 23 Mar 2005 | British | - |
| Takashi Uozumi | Director | 19 May 2009 | 30 Apr 2014 | Japanese | 55 years |
| Taro Ikeba | Director | 1 Apr 2016 | 31 May 2017 | Japanese | 60 years |
| Terence Charles Valler | Director | 15 Jun 1999 | 20 Sept 1999 | British | 73 years |
| Tetsuji Kawakami | Director | 14 Jun 2017 | 31 Mar 2019 | Japanese | 62 years |
| Toshitaka Konishi | Director | 21 Dec 1999 | 21 May 2001 | Japanese | 86 years |
| Tsunehiko Murai | Director | 1 Apr 2016 | 30 Jun 2021 | Japanese | 59 years |
| York Place Company Nominees Limited | Corporate Nominee Director | 8 May 1998 | 12 Jun 1998 | United Kingdom | - |
| York Place Company Secretaries Limited | Corporate Nominee Secretary | 8 May 1998 | 12 Jun 1998 | United Kingdom | - |
| Yoshiyuki Fujioka | Director | 28 Apr 2009 | 29 Nov 2012 | Japanese | 71 years |