Martial law in Poland (Polish: Stan wojenny w Polsce) refers to the period of time from December 13, 1981 to July 22, 1983, when the authoritarian government of the People's Republic of Poland drastically restricted normal life by introducing martial law in an attempt to crush political opposition. Thousands of opposition activists were interned without charge and as many as 100 people were killed. Although martial law was lifted in 1983, many of the political prisoners were not released until the general amnesty in 1986.

The phrase in Polish is stan wojenny, which translates as "the state of war". While there was no actual war at the time, the military government led by General of the Army Wojciech Jaruzelski and the Military Council of National Salvation (Wojskowa Rada Ocalenia Narodowego, WRON) usurped for itself powers reserved for wartime, hence the name. The plan was presented to the government of the Soviet Union before the declaration in March 1981.

Appearing on the Polish television at 6 AM on December 13, 1981, General Jaruzelski said:

Marcus Valerius Martialis (known in English as Martial) (March 1, 40 AD – between 102 and 104 AD), was a Latin poet from Hispania (the Iberian Peninsula) best known for his twelve books of Epigrams, published in Rome between AD 86 and 103, during the reigns of the emperors Domitian, Nerva and Trajan. In these short, witty poems he cheerfully satirises city life and the scandalous activities of his acquaintances, and romanticises his provincial upbringing. He wrote a total of 1,561, of which 1,235 are in elegiac couplets. He is considered to be the creator of the modern epigram.

Knowledge of his origins and early life are derived almost entirely from his works, which can be more or less dated according to the well-known events to which they refer. In Book X of his Epigrams, composed between 95 and 98, he mentions celebrating his fifty-seventh birthday; hence he was born on March 1 (x. 24) 38, 39, 40 or 41 AD, under Caligula or Claudius. His place of birth was Augusta Bilbilis (now Calatayud) in Hispania Tarraconensis. His parents, Fronto and Flaccilla, appear to have died in his youth.

The Polish law, or legal system in Poland. has been developing since the first centuries of Polish history, over 1,000 years ago. The public and private laws of Poland are codified. The supreme law in Poland is the Constitution of Poland. Poland is a civil law legal jurisdiction and has a civil code, the Civil Code of Poland.

Polish public and private laws are divided into various areas, including, for example:

New Polish law is published in Dziennik Ustaw and Monitor Polski (see promulgation).

Law in Poland is administered by the judiciary of Poland and enforced by the law enforcement in Poland.

Poland ⁱ/ˈpoʊlənd/ (Polish: Polska), officially the Republic of Poland (Polish: Rzeczpospolita Polska; Kashubian: Pòlskô Repùblika; Silesian: Polsko Republika), is a country in Central Europe, bordered by Germany to the west; the Czech Republic and Slovakia to the south; Ukraine, Belarus and Lithuania to the east; and the Baltic Sea and Kaliningrad Oblast, a Russian exclave, to the north. The total area of Poland is 312,679 square kilometres (120,726 sq mi), making it the 69th largest country in the world and the 9th largest in Europe. Poland has a population of over 38 million people, which makes it the 34th most populous country in the world and the sixth most populous member of the European Union, being its most populous post-communist member. Poland is a unitary state made up of 16 voivodeships. Poland is a member of the European Union, NATO, the United Nations, the World Trade Organization, the Organisation for Economic Co-operation and Development (OECD), European Economic Area, International Energy Agency, Council of Europe, Organization for Security and Co-operation in Europe, International Atomic Energy Agency, G6, Council of the Baltic Sea States, Visegrád Group, Weimar Triangle and Schengen Agreement.

Martial law is the imposition of military rule by military authorities over designated regions on an emergency basis—(usually) only temporary—when the civilian government or civilian authorities fail to function effectively (e.g., maintain order and security, and provide essential services), when there are extensive riots and protests, or when the disobedience of the law becomes widespread. In most cases, military forces are deployed to subdue the crowds, to secure government buildings and key or sensitive locations, and to maintain order. Generally, military personnel replace civil authorities and perform some or all of their functions. In full-scale martial law, the highest-ranking military officer would take over, or be installed, as the military governor or as head of the government, thus removing all power from the previous executive, legislative, and judicial branches of government.

Martial law can be used by governments to enforce their rule over the public. Such incidents may occur after a coup d'état (Thailand 2006); when threatened by popular protest (China, Tiananmen Square protests of 1989); to suppress political opposition (Poland in 1981); to stabilize insurrections or perceived insurrections (Canada, The October Crisis of 1970). Martial law may be declared in cases of major natural disasters, however most countries use a different legal construct, such as a "state of emergency".