Michael O'Donnell, is a British physician, journalist, author, and broadcaster.
He became a full-time writer after working for 12 years as a doctor. On BBC Radio Four he was chairman of My Word! and wrote and presented Relative Values. On BBC Television he presented the O’Donnell Investigates … series' and, on Yorkshire Television, the controversial Tuesday Documentary Is Your Brain Really Necessary?. He has worked as a newspaper and magazine columnist, published three novels, edited World Medicine, and written and presented over 100 television and radio documentaries.