Nawrocki made the announcement at Warsaw's Royal Castle on Sunday – the anniversary of Poland's Constitution of 3 May 1791 – where he handed out appointments to its first members.
The council, which he described as a "new generation constitution" project targeting 2030, includes former Constitutional Tribunal president Julia Przyłębska, several legal scholars and former lower-house Speakers.
The president said he had already invited representatives of all parliamentary parties to join the work, insisting the debate should be inclusive.
"I believe that all those who care about the future of the Republic will sit together in the Presidential Palace to work on a new constitution," he said.
Government ministers responded with scepticism.
Defence Minister Władysław Kosiniak-Kamysz questioned whether the constitution itself was the problem, or whether those bound by it were simply failing to uphold it.
He suggested that Poland's membership of NATO and the EU might warrant inclusion in any updated basic law, but stopped short of endorsing a full rewrite.
Interior Minister Tomasz Siemoniak argued that launching a constitutional debate "from an attack on the parliamentary majority" did not suggest a genuine intention to reform.
He warned that opening "another prolonged and bitter dispute over a new constitution" would weaken Poland at a time of heightened security threats.
Without a two-thirds majority in both chambers, he added, no new constitution was possible regardless of how many councils were established.
Foreign Minister Radosław Sikorski also expressed criticism.
"If President Nawrocki wants more power for himself at the expense of the government and parliament, then – by maliciously vetoing and dismantling state procedures – he has chosen an original method of persuasion," he wrote on X.
(ał)
Source: PAP