The European Parliament election of 1989 took place on 18 June 1989.
Christian Democracy was the largest party in Sardinia. Mario Melis (Sardinian Action Party) was re-elected to the European Parliament in the Islands constituency, thanks to an alliance with several regionalist parties notably including the Valdostan Union.
Results Parties votes votes (%) Christian Democracy331,59035.9 Italian Communist Party256,35327.8 Italian Socialist Party110,76312.0 Sardinian Action Party98,17510.6 Italian Social Movement34,0243.7 Italian Democratic Socialist Party26,8412.9 Italian Republican Party–Italian Liberal Party19,5922.1 Federation of Green Lists17,9551.9 Anti-Prohibition List11,6851.3 Rainbow Greens8,5510.9 Proletarian Democracy7,4090.8 Others8210.1Total923,759100.0 Source: Ministry of the Interior