The Cuban Embassy in Paris said on Tuesday that its building had been attacked with petrol bombs, causing serious damage but no injuries to diplomatic staff.
The embassy published photos on its official Twitter account of damage to the building and condemned the attack. It did not say who it thought was responsible.
"Those directly responsible for these acts are those who incite violence and hatred against our country", the Cuban Foreign ministry said on Twitter.
A police spokesman had no immediate comment.
Cuba has been rocked by protests against a deep economic crisis, the government's handling of the coronavirus pandemic and curbs on civil liberties, prompting the Communist-run country to restrict access to social media and messaging platforms.
The foreign ministers of the United States and 20 other countries on Monday condemned mass arrests in Cuba and called for full restoration of Internet access.