The Estoril Casino () is a casino in the Portuguese Riviera, in the municipality of Cascais, Portugal. Today, it is one of the biggest working casinos in Europe.
History
thumb|left|170px|A publicity poster from the early 20th century
thumb|left|170px|Estoril Casino at night
thumb|left|170px| Estoril-Sol Hotel in November 1994
The first stone was laid on 16 January 1916 by then-President Dr. Bernardino Machado, a venture of Fausto Figueiredo.
During the Second World War, it was reputed to be a gathering point for spies, dispossessed royals, and wartime adventurers; it became an inspiration for Ian Fleming's James Bond 007 novel Casino Royale.
The casino passed into the hands of José Teodoro dos Santos in 1958. During the 1960s, the primitive building was expanded, under the direction of Filipe Nobre de Figueiredo and José Segurado, accompanied by the civil engineer Manuel Agostinho Duarte Gaspar, and was decorated by Daciano da Costa and José Espinho.
Inclusive of multiple casino properties, the management company Estoril Sol reported €80.6 million in net revenue for 2021.