The Joint Service Defence College (JSDC) was a training academy for British military personnel from 1983 to 1997.

[1] The college was an independent Ministry of Defence Establishment offering courses to officers of all three services.

Senior Directing Staff included Royal Navy, British Army, Royal Air Force, civilian colonels and equivalent: civilian G5 or Assistant Secretary (Counsellor).

Those officers passing the course, or serving on the directing staff for at least six months, received the letters jsdc.

The majority of students went on to joint, central staff or international appointments.