John Bodkin Adams (January 21, 1899 – July 4, 1983) was an Irish-born British general practitioner and suspected serial killer. Cullen, Pamela V., "A Stranger in Blood: The Case Files on Dr John Bodkin Adams", London, Elliott & Thompson, 2006, ISBN 1-904027-19-9 More than 160 of his patients died under suspicious circumstances. He was tried and acquitted for the murder of one patient in 1957, causing questions to be asked in Parliament. Another count of murder was withdrawn by the prosecution in what has been described as 'an abuse of process' Patrick Devlin, Easing the passing: The trial of Doctor John Bodkin Adams, London, The Bodley Head, 1985 . The trial featured in headlines around the world and was described at the time as "one of the greatest murder trials of all time".

Adams was subsequently found guilty of 13 offences of prescription fraud, lying on cremation forms, obstructing a police search and failing to keep a dangerous drugs register. He was removed from the Medical Register in 1957 and reinstated in 1961. He was banned from prescribing dangerous drugs for life.

Scotland Yard's files on the case were initially closed to the public until 2033, but special permission was granted in 2003 to open them.