The 1982–83 Copa del Rey is the 79th staging of the Spanish Cup. The competition began on September 15, 1982 and ended on June 4, 1983 with the final.

The Copa del Rey (English: King's Cup) is an annual football cup competition for Spanish football teams. Its full name is Campeonato de España – Copa de Su Majestad el Rey de Fútbol (Championship of Spain – His Majesty the King's Football Cup).

The competition was founded in 1903, thus making it the oldest Spanish football competition. The current holder is Barcelona. The 2011–12 final was at Estadio Vicente Calderon between Athletic Bilbao 0-3 FC Barcelona. Typically, the winner of Copa del Rey goes to the UEFA Europa League; should one of the finalists have already qualified for European competition then the other finalist goes into the Europa League. FC Barcelona has won the cup on the most occasions, with 26 wins.

In 1902, a competition under the name Copa de la Coronación, was first played after Carlos Padrós, later president of Real Madrid, suggested a football tournament to celebrate the coronation of King Alfonso XIII. Four other teams joined Madrid FC for the competition: FC Barcelona, Club Español de Foot-Ball, New Foot-Ball de Madrid and Club Bizcaya (a team made up of players from Athletic Club and Bilbao FC) which eventually defeated Barcelona in the final. That cup is on display in the Athletic Bilbao museum and the club includes the victory in its honours list. Nevertheless, it is considered only the forerunner of the Copa del Rey and the Royal Spanish Football Federation officially don't recognize it.

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