The Greek Constitutional amendment of 1986 was proposed in order to limit the powers of the President of the Republic.^[1] Although the president had been vested with considerable powers under the 1975 Constitution, in practice Greek presidents largely took a ceremonial role. Nevertheless, by virtue of their mere existence they influenced the development of political affairs during the first co-existence of Constantine Karamanlis as President of the Republic with the government of PASOK from 1980 to 1986. The responsibilities of the President of the Republic were the target of the revisionary proceedings of 1985-1986.

You can help expand this article with text translated from the corresponding article in Greek. (March 2023) Click [show] for important translation instructions. View a machine-translated version of the Greek article. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 354 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Greek Wikipedia article at [[:el:Ελληνική συνταγματική αναθεώρηση του 1986]]; see its history for attribution. You should also add the template {{Translated|el|Ελληνική συνταγματική αναθεώρηση του 1986}} to the talk page. For more guidance, see Wikipedia:Translation.

On 6 March 1986, pursuant to article 110 of the Constitution, which stipulates that the provisions of the Constitution are subject to revision except for those which determine the form of government as a Parliamentary Republic as well as certain other provisions, eleven articles were amended and a vote was passed transposing the text of the Constitution into demotic Greek.

Through this revision, the responsibilities of the President of the Republic were curtailed to a significant extent--codifying actual practices dating from the end of military rule in 1974. Despite the political and the constitutional tensions of that period, the revised Constitution of 1975/1986, which introduced a pure parliamentary governmental system, was accepted by all political powers.