Wojciech Witold Jaruzelski (Polish: [ˈvɔjt͡ɕɛɣ ˈvitɔlt jaruˈzɛlskʲi] (listen); 6 July 1923 – 25 May 2014) was a Polish military officer, politician and de facto leader of the Polish People's Republic from 1981 until 1989. He was the First Secretary of the Polish United Workers' Party between 1981 and 1989, making him the last leader of the Polish People's Republic. Jaruzelski served as Prime Minister from 1981 to 1985, the Chairman of the Council of State from 1985 to 1989 and briefly as President of Poland from 1989 to 1990, when the office of President was restored after 37 years. He was also the last commander-in-chief of the Polish People's Army, which in 1990 became the Polish Armed Forces.

Born to Polish nobility in Kurów in eastern (then-central) Poland, Jaruzelski was deported with his family to Siberia by the NKVD after the invasion of Poland. Assigned to forced labour in the Siberian wilderness, he developed photokeratitis or snow blindness which forced him to wear protective sunglasses for the rest of his life. In 1943, Jaruzelski joined the newly created First Polish Army and fought alongside the Soviets against Nazi Germany in the Eastern Front, most notably in the liberation of Warsaw and in the Battle of Berlin. Following the Polish October and the expatriation of Marshal Konstantin Rokossovsky back to the Soviet Union, Jaruzelski became the chief political officer of the Polish People's Army and eventually Polish Minister of Defence in 1968.

Jaruzelski became the First Secretary of the Polish United Workers' Party and leader of Poland after the brief one-year term of Stanisław Kania. Kania's predecessor, Edward Gierek, left Poland severely indebted by accepting loans from foreign creditors and the country's economy almost collapsed by the time Jaruzelski became head of state. As Poland headed towards insolvency, rationing was enforced due to shortages of basic goods, which only contributed to the tense social and political situation. The declining living and working conditions triggered anger among the masses and strengthened anti-communist sentiment; the Solidarity movement was also gaining support which worried the Polish Central Committee and the Soviet Union that viewed Solidarity as a threat to the Warsaw Pact. Fearing a Soviet intervention similar to those in Hungary (1956) and Czechoslovakia (1968), Jaruzelski imposed martial law in Poland on 13 December 1981 to crush the anticommunist opposition. The military junta, curfew and travel restrictions lasted until 22 July 1983.

By the mid-1980s, censorship lost its importance and the authority of the United Workers’ Party disintegrated, allowing more freedom in already liberal Poland. During the revolutions of 1989 in Central and Eastern Europe, Jaruzelski supported the change of government for the benefit of the country and resigned after the Polish Round Table Agreement, which led to multi-party elections in Poland. He briefly served as President of Poland but exercised no real power and, in the 1990 Polish presidential election, Lech Wałęsa succeeded him as the first President elected in a popular vote.

Jaruzelski remains a controversial figure in Poland today; he was fiercely criticized by contemporaries for instigating martial law, during which thousands of opposition activists were imprisoned without definite charges and as many as 91 executed.