John Vivian Drummond Nettles,OBE is an English actor and author. He is best known for his starring roles as detectives in the crime drama television series Bergerac (1981–1991) in the title role, and Midsomer Murders (1997–2011) as Detective Chief Inspector Tom Barnaby. He has also narrated several television series.

Bergerac is a British crime drama television series. Set in Jersey, it ran from 18 October 1981 to 26 December 1991. Produced by the BBC in association with the Australian Seven Network, and first screened on BBC1, it stars John Nettles as the title character Jim Bergerac, who is initially a detective sergeant in Le Bureau des Étrangers, within the States of Jersey Police, but later leaves the force and becomes a private investigator.