| KITADA, Toshiya ACTIVE | Secretary | 01 Apr 2025 | | | | 87 Creffield Road, Acton, London, W3 9PU |
| HIRAOKA, Masaki ACTIVE | Director | 01 Apr 2026 | | England | April 1974 | 87 Creffield Road, Acton, London, W3 9PU |
| IBARAKI, Hiroshi ACTIVE | Director | 11 Dec 2025 | | United Kingdom | September 1971 | 87 Creffield Road, Acton, London, W3 9PU |
| KOIKE, Hiroyuki ACTIVE | Director | 11 Dec 2025 | | England | September 1964 | 87 Creffield Road, Acton, London, W3 9PU |
| KUDO, Takehito, Mr. ACTIVE | Director | 11 Dec 2025 | | England | December 1971 | 87 Creffield Road, Acton, London, W3 9PU |
| NAKAMURA, Satoshi ACTIVE | Director | 01 Mar 2025 | | England | October 1962 | 87 Creffield Road, Acton, London, W3 9PU |
| OHIRA, Shogo ACTIVE | Director | 18 May 2026 | | England | October 1974 | 87 Creffield Road, Acton, London, W3 9PU |
| SHINOHARA, Tetsuya ACTIVE | Director | 01 Apr 2025 | | United Kingdom | July 1967 | 87 Creffield Road, Acton, London, W3 9PU |
| SHINYA, Hirokazu ACTIVE | Director | 24 Sep 2025 | | England | June 1965 | 87 Creffield Road, Acton, London, W3 9PU |
| SUZUKI, Takahiro ACTIVE | Director | 01 Apr 2026 | | England | July 1973 | 87 Creffield Road, Acton, London, W3 9PU |
| TAKAHASHI, Manabu, Mr. ACTIVE | Director | 01 Apr 2026 | | England | April 1978 | 87 Creffield Road, Acton, London, W3 9PU |
| TAKAHIRO, Kazuya ACTIVE | Director | 01 Apr 2024 | | United Kingdom | June 1970 | 87 Creffield Road, Acton, London, W3 9PU |
| YAMAMURA, Hidefumi ACTIVE | Director | 11 Dec 2025 | | England | August 1970 | 87 Creffield Road, Acton, London, W3 9PU |
| YOSHIOKA, Ryosuke, Mr. ACTIVE | Director | 01 Apr 2026 | | England | April 1977 | 87 Creffield Road, Acton, London, W3 9PU |
| ARIMATSU, Seiji RESIGNED | Secretary | | 01 Apr 1999 | | | The Japanese School Limited, 87 Creffield Road Acton, London, W3 9PU |
| KASHIWABARA, Takaki RESIGNED | Secretary | 01 Aug 2018 | 06 Dec 2018 | | | 87 Creffield Road, Acton, London, W3 9PU |
| KAWAI, Mitsuhiko RESIGNED | Secretary | 01 Apr 2006 | 11 Jun 2007 | | | 24, King William Street, London, EC4R 9AJ |
| NISHIHARA, Katsumi RESIGNED | Secretary | 06 Dec 2018 | 01 Apr 2022 | | | 87 Creffield Road, Acton, London, W3 9PU |
| OKAMOTO, Kazuo RESIGNED | Secretary | 01 Apr 2022 | 31 Mar 2025 | | | 87 Creffield Road, Acton, London, W3 9PU |
| SUGANO, Shuichi RESIGNED | Secretary | 01 Apr 1999 | 01 Apr 2017 | | | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| TAKENAKA, Satoshi RESIGNED | Secretary | 01 Apr 2017 | 01 Aug 2018 | | | 87 Creffield Road, Acton, London, W3 9PU |
| ABE, Kazuo RESIGNED | Director | 10 Dec 2015 | 07 Jun 2018 | England | November 1960 | 87, Creffield Road, London, W3 9PU, England |
| ABE, Ken RESIGNED | Director | 11 Jun 2007 | 17 Jun 2008 | | September 1947 | 24 King William Street, London, EC4R 9AJ |
| AOKI, Takeo RESIGNED | Director | 25 Apr 2019 | 19 Apr 2022 | United Kingdom | November 1967 | 87 Creffield Road, Acton, London, W3 9PU |
| AOKI, Tokikazu RESIGNED | Director | 17 Apr 2015 | 05 Apr 2018 | United Kingdom | January 1955 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| ARAI, Toshiaki RESIGNED | Director | 10 Dec 1998 | 28 Jul 1999 | | September 1947 | 45 The Little Adelphi, 10-14 John Adam Street, London, WC2N 6HA |
| ARAKAWA, Takayuki RESIGNED | Director | 20 Mar 2007 | 11 May 2009 | | August 1953 | 52 Northfields Road, Acton, London, W3 0NW |
| ARIYASU, Hideyuki RESIGNED | Director | 06 Dec 2007 | 10 Sep 2010 | United Kingdom | May 1956 | 41 Hemwood Road, Windsor, SL4 4YX |
| ASANUMA, Jun RESIGNED | Director | 12 Dec 2002 | 01 Aug 2003 | | April 1948 | 24 Greville Place, London, NW8 5JU |
| ASANUMA, Jun RESIGNED | Director | 12 Jul 2000 | 07 Dec 2000 | | April 1948 | 9 Lavington, Greville Place, London, NW6 5JU |
| BAMBA, Ryoichi RESIGNED | Director | 10 Dec 2009 | 10 May 2012 | U K | November 1946 | 87, Creffield Road, Acton, London, W3 9PU |
| EGUCHI, Toshiaki RESIGNED | Director | 10 May 2012 | 17 Apr 2015 | Uk | October 1947 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| ENDO, Kyoichi RESIGNED | Director | 01 Apr 2004 | 01 Apr 2006 | | October 1947 | 24 King William Street, London, EC4R 9AJ |
| ENYA, Kenji RESIGNED | Director | 01 May 1996 | 30 Jun 1997 | | November 1937 | Flat 5 24 Carlton House Terrace, London, SW1Y 5AP |
| FUJI, Tomoyuki RESIGNED | Director | 10 Dec 1998 | 18 Jun 1999 | | February 1944 | Flat 2 57 Eaton Place, London, SW1X 8DF |
| FUJII, Takeo RESIGNED | Director | 14 Dec 1993 | 13 Jul 1994 | | June 1932 | 5 Washington House, 20 Basil Street, London, SW3 1AR |
| FUJIMOTO, Kimisuke RESIGNED | Director | 22 Jul 1993 | 14 Dec 1994 | | September 1942 | Flat 2, 57 Eaton Place, London, SW1X 8DF |
| FUJITANI, Yasuyuki RESIGNED | Director | 01 Apr 2018 | 01 Apr 2020 | England | March 1958 | 87 Creffield Road, Acton, London, W3 9PU |
| FUKUBAYASHI, Masami RESIGNED | Director | 10 Aug 1992 | 31 Jul 1997 | | October 1939 | 38 St Stephens Close, London, NW8 6DD |
| FUKUMURO, Osamu RESIGNED | Director | | 20 Jan 1997 | | March 1936 | Arlington House, Arlington Street, London, SW1 |
| FUKUYA, Hiroshi RESIGNED | Director | | 25 May 1995 | | November 1943 | 1 South Lodge, Circus Road St Johns Wood, London, NW8 9ER |
| GODA, Masahiko RESIGNED | Director | 24 Apr 2001 | 01 Apr 2003 | | March 1946 | Flat 27, Berkeley Court, London, NW1 |
| GOMI, Hideo RESIGNED | Director | | 14 Dec 1992 | | November 1933 | 109 Clarence Gate Gardens, London, NW1 6AL |
| GOTO, Masaaki RESIGNED | Director | 10 May 2012 | 05 Dec 2013 | Uk | January 1960 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| HABU, Shuichi RESIGNED | Director | 09 Dec 2004 | 08 Dec 2005 | | July 1954 | Flat 4, 22 Belsize Square, London, NW3 4HT |
| HABU, Shuichi RESIGNED | Director | 13 Dec 2001 | 12 Dec 2002 | | July 1954 | Flat 4, 22 Belsize Square, London, NW3 4HT |
| HAGA, Bin RESIGNED | Director | 08 Jul 2016 | 08 Dec 2016 | United Kingdom | February 1964 | 87 Creffield Road, Acton, London, W3 9PU |
| HAMA, Masataka RESIGNED | Director | 07 Dec 2000 | 12 Dec 2002 | | January 1951 | 6 Greenoak Way, London, SW19 5EN |
| HANZAWA, Takami RESIGNED | Director | 06 Dec 2012 | 05 Dec 2013 | Uk | August 1962 | 87, Creffield Road, Acton, London, W3 9PU |
| HARANO, Kiichiro RESIGNED | Director | 28 Jul 1999 | 09 Dec 1999 | | February 1957 | 45 The Little Adelphi, 10 John Adam Street, London, WC2N 6HA |
| HATTORI, Hiroshi RESIGNED | Director | 21 May 2010 | 25 Apr 2014 | United Kingdom | October 1953 | 87, Creffield Road, Acton, London, W3 9PU |
| HAYASHI, Haruki, Mr. RESIGNED | Director | 17 May 2013 | 01 Apr 2018 | England | March 1956 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| HAYASHI, Kenichiro RESIGNED | Director | 25 Jun 2001 | 13 Dec 2001 | | April 1947 | Flat 15 La Residence, 38a Marlborough Place, London, NW8 0PD |
| HAYASHI, Michio RESIGNED | Director | 05 Dec 2013 | 30 Jun 2014 | U.K. | May 1963 | 87, Creffield Road, Acton, London, W3 9PU, U.K. |
| HIGASHI, Shuntaro RESIGNED | Director | 21 May 2004 | 24 Apr 2006 | | June 1949 | Temple Court, 11 Queen Victoria Street, London, EC4N 4TA |
| HIRAMATSU, Kenji RESIGNED | Director | 17 Aug 2004 | 25 Sep 2008 | | December 1956 | Flat 5 Broadwalk House, 51 Hydepark Gate, London, SW7 5DZ |
| HIRANO, Tatsuya RESIGNED | Director | 01 Apr 2025 | 11 Dec 2025 | United Kingdom | July 1968 | 87 Creffield Road, Acton, London, W3 9PU |
| HIRANO, Tomohiko RESIGNED | Director | 01 Apr 2017 | 01 Jan 2019 | United Kingdom | September 1963 | 87 Creffield Road, Acton, London, W3 9PU |
| HIROKAWA, Ryuichi RESIGNED | Director | 01 Apr 2013 | 25 Apr 2016 | Uk | February 1957 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| HOSAKA, Taira RESIGNED | Director | 14 Dec 1994 | 09 Jun 1995 | | September 1942 | Flat 19, 35-37 Grosvenor Square, London, NW4 3SD |
| ICHINOKAWA, Satoru RESIGNED | Director | 01 Apr 2024 | 05 Dec 2024 | England | April 1965 | 87 Creffield Road, Acton, London, W3 9PU |
| IDE, Hidehiko RESIGNED | Director | 02 Jun 1997 | 10 Dec 1998 | | February 1947 | Flat 20 35/37 Grosvenor Square, London, W1X 9AF |
| IDE, Takeyoshi RESIGNED | Director | 13 Jul 2006 | 07 Dec 2006 | | July 1951 | Flat 77 40-90 Kingston House South, Ennismore Gardens, London, SW7 1NG |
| IGARASHI, Toshiaki RESIGNED | Director | 11 May 2009 | 08 Mar 2013 | United Kingdom | November 1949 | Flat 1,, 40 Pont Street, London, SW1X 0AD |
| IHOKIBE, Yoshitaka RESIGNED | Director | 17 Apr 2015 | 16 Apr 2019 | United Kingdom | June 1962 | 87, Creffield Road, Acton, London, W3 9PU, United Kingdom |
| IHORI, Masayuki RESIGNED | Director | 10 Feb 1999 | 19 Jun 2002 | | September 1940 | Flat 14 Balmoral Court, 20 Queens Terrace, London, NW8 6DU |
| IIO, Norinao RESIGNED | Director | 17 Jun 2008 | 11 May 2009 | | March 1951 | 24, King William Street, London, EC4R 9AJ |
| IIZUKA, Naoki RESIGNED | Director | 05 Dec 2013 | 08 Dec 2016 | U.K. | October 1955 | 87, Creffield Road, Acton, London, W3 9PU, U.K. |
| IKEDA, Masayuki RESIGNED | Director | | 14 Dec 1992 | | September 1932 | 5 Ingram Avenue, Hampstead, London, NW11 6TG |
| IKEUCHI, Tomio RESIGNED | Director | 15 Jul 1997 | 24 Apr 2001 | | November 1945 | Flat 68 Kingston House North, Kensington Road, London, SW7 1LW |
| IKEZAWA, Kunio RESIGNED | Director | 14 Dec 1995 | 20 Jan 1996 | | February 1938 | Flat 12 1-32 Kingston House South, Ennismore Gardens, London, SW7, England |
| IMAI, Masahiro RESIGNED | Director | 15 Dec 2013 | 11 Dec 2014 | England | August 1956 | 87, Creffield Road, Acton, London, W3 9PU, U.K. |
| IMAMURA, Akira RESIGNED | Director | 20 Jun 2011 | 07 Oct 2013 | U.K. | April 1960 | 87, Creffield Road, Acton, London, W3 9PU, U.K. |
| INOUE, Hidenobu RESIGNED | Director | 07 Dec 2000 | 13 Dec 2001 | | April 1944 | 5 La Residence, 38a Marlborough Place, London, NW8 0PE |
| IRIE, Kenji RESIGNED | Director | 11 Dec 2003 | 15 Jun 2004 | | June 1952 | 20 Harrow Lodge, Northwick Terrace, London, NW8 8HR |
| ISHIBASHI, Toshio RESIGNED | Director | 20 Jan 1996 | 12 Dec 1996 | | March 1942 | Flat 12 1-32 Kingston House South, Ennismore Gardens, London, SW7 1AA |
| ISHIDA, Tadamasa RESIGNED | Director | 29 Jun 2000 | 20 Jun 2002 | | February 1945 | Flat 13, Arlington House, 17-20 Arlington Street, London, SW1A 1RJ |
| ISHIDA, Yugo RESIGNED | Director | 01 Apr 2005 | 21 May 2009 | | January 1957 | 10 Uplands Close, Gerrards Cross, Buckinghamshire, SL9 7JH |
| ISHII, Jumpei RESIGNED | Director | 27 Jun 1997 | 09 Dec 1999 | | February 1947 | 21 Prince Regent Court 8 Avenue Road, London, NW8 7RB |
| ISHII, Takahiro RESIGNED | Director | 19 Jun 2002 | 11 Dec 2008 | | September 1944 | 23 The Paddocks, Weybridge, Surrey, KT13 9RL |
| ISHIKAWA, Hironobu RESIGNED | Director | 17 May 2013 | 25 Apr 2016 | United Kingdom | December 1954 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| ISHIKAWA, Junichi, Mr. RESIGNED | Director | 02 Sep 2013 | 12 Feb 2016 | Uk | January 1964 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| ISHIMARU, Yuichi RESIGNED | Director | 01 Apr 1998 | 01 Apr 2000 | | May 1939 | 18 Imperial Court 1 Avenue Road, St Johns Wood, London, NW8 7PT |
| ISHIYAMA, Hideki RESIGNED | Director | 01 Apr 2019 | 01 Apr 2022 | England | March 1966 | 87 Creffield Road, Acton, London, W3 9PU |
| ISHIZUKA, Yuichi RESIGNED | Director | 07 Dec 2023 | 01 Mar 2025 | England | February 1955 | 87 Creffield Road, Acton, London, W3 9PU |
| ISHIZUKA, Yuichi RESIGNED | Director | 06 Dec 2018 | 10 Dec 2020 | England | February 1955 | 87 Creffield Road, Acton, London, W3 9PU |
| ISHIZUKI, Mutsumi RESIGNED | Director | 01 Jan 2019 | 01 Apr 2020 | England | February 1958 | 87 Creffield Road, Acton, London, W3 9PU |
| ITO, Hidekazu RESIGNED | Director | 10 Dec 2009 | 09 Dec 2010 | Uk | October 1961 | 87, Creffield Road, Acton, London, W3 9PU |
| IWAKUMA, Hiroshi RESIGNED | Director | 15 Jun 2004 | 09 Dec 2004 | | February 1951 | Flat 28, 11 Sheldon Square, London, W2 6DQ |
| IWAMI, Hiroyuki RESIGNED | Director | 06 Dec 2012 | 30 Jun 2014 | Uk | April 1954 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| IWASE, Mitsuaki RESIGNED | Director | 09 Dec 1999 | 12 Jul 2000 | | September 1948 | 11c Kings Road, Richmond, Surrey, TW10 6NN |
| IWASHITA, Naoya RESIGNED | Director | 25 Apr 2014 | 25 Apr 2016 | United Kingdom | January 1957 | 87, Creffield Road, Acton, London, W3 9PU, Uk |
| IYAMA, Akihiro RESIGNED | Director | 21 Mar 2006 | 11 May 2009 | | October 1945 | 112 Regent Court, 29a Wrights Lane, London, W8 5SJ |
| KAKU, Tsuneaki RESIGNED | Director | | 01 Jun 1995 | | August 1931 | Brampton Byron Drive, The Bishops Avenue, London, N2 0BD |
| KAMATANI, Akira RESIGNED | Director | 07 Dec 2017 | 05 Sep 2018 | England | January 1969 | 87 Creffield Road, Acton, London, W3 9PU |
| KAMATANI, Akira RESIGNED | Director | 11 Dec 2014 | 10 Dec 2015 | U.K. | January 1969 | 87, Creffield Road, Acton, London, W3 9PU, U.K. |
| KAMIKOCHI, Ken RESIGNED | Director | 01 Oct 2004 | 25 Sep 2008 | | November 1950 | Flat 35 Kingston House North, Princes Gate, London, SW7 1LW |
| KANAYA, Kazud RESIGNED | Director | | 14 Dec 1993 | | January 1940 | Orchard Terrace, Netherall Gardens, London, NW3 |
| KANE, Koichi RESIGNED | Director | | 15 Jul 1996 | | December 1944 | 3 Beaumont Gardens, West Heath Road, London, NW3 7TX |
| KANO, Isao RESIGNED | Director | 01 Apr 2018 | 01 Apr 2020 | England | August 1960 | 87 Creffield Road, Acton, London, W3 9PU |