The Opel Ascona is a large family car (D-segment in Europe) that was produced by the German automaker Opel from 1970 to 1988. It was produced in three separate generations, beginning with rear-wheel-drive and ending up as a front-wheel drive J-car derivative.

The Ascona took its name from the lakeside resort of that name in Ticino, Switzerland, and already in the 1950s a special edition of the Opel Rekord P1 was sold as an Opel Ascona in Switzerland, where the name was again used in 1968 for a locally adapted version of the Opel Kadett B into which the manufacturers had persuaded a 1.7-litre engine borrowed from the larger Rekord model of the time.[1] The Opel Ascona A launched in 1970 and sold across Europe was, however, the first mainstream Opel model to carry the name.

The Ascona was introduced in September 1970, lasting for 18 years and 3 generations and ended production in August 1988, to be replaced by the Opel Vectra A.