Dziennik Ustaw Rzeczypospolitej Polskiej (English: Journal of Laws of the Republic of Poland, abbreviated Dz. U.) is the most important Polish publication of legal acts. It is the only official source of law for promulgation of Polish laws. The publication of this journal is solely the responsibility of the Prime Minister of the Republic of Poland.

Polish legal database giving access to the Polish national law and EU law. It covers law, jurisprudence, nomenclature, legal references. legal commentaries and journals.

The European e-Justice Portal provides information on justice systems and improving access to justice throughout the EU. The sections include: National legislation: Poland |
National case-law:Poland |
National justice systems: Poland

This guide lists essential print and online sources for researching foreign law.

The Foreign Law section of GlobaLex is dedicated to law research scholarship in nearly all jurisdictions of the world. Articles are written by experts from those jurisdictions who bring their unique and local perspectives. These contributions offer an overview and analysis of legal systems, including a discussion about governments and their structure, identify sources of law, and provide descriptions and compilations of primary and secondary publications.

This guide, prepared by the Law Library of Congress, includes links to free online resources regarding the country of Poland, focusing on its constitution; executive, legislative and judicial branches; legal guides; and general sources.