Nicholas Charles "Nick" Cotton is a fictional character from the British soap opera EastEnders played by John Altman on a semi-regular basis from the soap's debut episode on 19 February 1985. Altman has stated that his initial exit was due to producer Julia Smith demanding he was written out after he opposed a decision to make his character gay. After Smith's departure, the character made numerous brief or more protracted stints until his onscreen death in February 2015, which was written to coincide with the 30th anniversary of EastEnders.

EastEnders is a British television soap opera created by Julia Smith and Tony Holland which has been broadcast on BBC One since February 1985. Set in the fictional borough of Walford in the East End of London, the programme follows the stories of local residents and their families as they go about their daily lives. Within eight months of the show's original launch, it had reached the number one spot in BARB's television ratings, and has consistently remained among the top-rated series in Britain. Four EastEnders episodes are listed in the all-time top 10 most-watched programmes in the UK, including the number one spot, when over 30 million watched the 1986 Christmas Day episode. EastEnders has been important in the history of British television drama, tackling many subjects that are considered to be controversial or taboo in British culture, and portraying a social life previously unseen on UK mainstream television.