Constitution of the Republic of Croatia

Zemlja
Croatia

Article 146
Citizens of the Republic of Croatia shall be European Union citizens and shall enjoy the rights
guaranteed by the European Union acquis communautaire, and in particular:
(...)
– the right to submit petitions to the European Parliament, complaints to the European
Ombudsman and the right to apply to European Union institutions and advisory bodies in the
Croatian language, as well as in all the other official languages of the European Union, and to receive a reply in the same language.

All rights shall be exercised in compliance with the conditions and limitations laid down in the founding treaties of the European Union and the measures undertaken pursuant to such treaties.
In the Republic of Croatia, all rights guaranteed by the European Union acquis
communautaire shall be enjoyed by all citizens of the European Union.