J.
01/07/32 Rear Admiral (Trésorier) (Retraite) Ernest William Heathcote Jackman.
31/06/30 Captain puis 06/40 Rear Admiral (Retraite) Arthur Lambert Jackson: 26/06/40 en retraite.
31/06/29 Captain puis 06/40 Rear Admiral (Retraite) William Lindsay Jackson (1889-12/08/1962): DSO, 26/06/40 en retraite.
15/10/17 Rear Admiral (Ingenieur) Charles John James (29/12/1862-16/04/1943) (1 GM): CB (19).
22/10/27 Rear Admiral (Ingenieur) George Hoare Jeffery: OBE.
30/06/38 Captain (Trésorier) puis Rear Admiral (Active) (Trésorier) Rowland Christopher Jerram: CBE et DSO.
15/07/15 Rear Admiral (Retraite) Edmund Purefoy Ellis Jervoise (1 GM): CBE.
01/07/32 Rear Admiral (Trésorier) (Retraite) Robert Alfred Jinkin (-25/08/1944): CB et OBE.
23/01/37 Rear Admiral (Trésorier) (Retraite) Cyril Sheldon Johnson: DSO.
02/06/28 Rear Admiral (Ingenieur) Harry Herbert Johnson: DSO, réactivé.
02/02/12 Rear Admiral (Médecine) Alexander John James Johnston (06/09/1856-17/10/1942) (1 GM).
10/07/36 Captain (Trésorier) puis 10/07/42 Rear Admiral (Trésorier) sir William Evelyn Hatten Jolly: KCB, directeur général de la Trésorerie (II) (10/07/42-10/07/45), puis 10/07/45 en retraite.
01/01/23 Rear Admiral (Trésorier) (Retraite) John Edward Jones: CBE.