The Opel Ascona was a large family car (D-segment in Europe) 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 and ended production in August 1988, to be replaced by the Opel Vectra A.