Major-General James Alexander Deans Johnston, OBE, MC (28 February 1911 – 17 May 1988) was a senior British Army officer in the Royal Army Medical Corps and the Senior Medical Officer at the liberated Bergen-Belsen concentration camp towards the end of the Second World War. A docudrama portraying his experiences attempting to save the starving and diseased concentration camp prisoners at Bergen-Belsen was made in 2007 entitled The Relief of Belsen.