Michael John Hargrave (8 December 1923 – 25 July 1974) was a British general practitioner in Wootton Bassett, Wiltshire, who in 1945 assisted at Bergen-Belsen concentration camp when he volunteered as a medical student from Westminster Hospital at the age of 21.
After graduating in medicine in 1947, Hargrave took a house job at Westminster Hospital after which he completed his national service with the Royal Air Force in Egypt and Kenya.
Upon returning to Wootton Bassett in 1950, he became a general practitioner and a clinical assistant to the ear, nose and throat clinic at the Princess Margaret Hospital, Swindon.
By 1956, he had a purpose-built surgery with an appointment system and radiotelephone.
His memoirs, written for his mother, were used by historian Ben Shephard in his 2005 book After Daybreak: The Liberation of Belsen, 1945, and were published by Imperial College Press in 2014, in a book titled Bergen-Belsen 1945: A Medical Student's Journal.