Odeon Cinemas is a British chain of cinemas, one of the largest in Europe. It is owned by Odeon & UCI Cinemas Group whose ultimate parent is Terra Firma Capital Partners.

Odeon Cinemas was created in 1928 by Oscar Deutsch. Odeon publicists have claimed that the name of the cinemas was derived from his motto, "Oscar Deutsch Entertains Our Nation", but it had been used for cinemas in France and Italy in the 1920s, and the name is ultimately derived from Ancient Greek^{[citation needed]}. The name "Nickelodeon" was coined in 1905 and was widely used to describe small movie theatres in the United States during that era.

However the company is most associated with J. Arthur Rank, the owner for the longest period in its history.

The first cinema opened by Oscar Deutsch was located in Brierley Hill, West Midlands in 1928. The building has long since been demolished, but as of 2006, the former UCI Cinema (built in the 1980s as an AMC multiplex) at the Merry Hill Shopping Centre in Brierley Hill was refurbished as an Odeon Cinema. However, its style is very much blander than that of original Odeon cinemas, with the Company now being managed by the largely multiplex style UCI group, who's primary focus appears to be cinema food retail.