40 1945 establishments in Poland

The Baj Pomorski Theatre is a puppet theatre, located in Toruń in Poland.

Blekitni Kielce is a defunct Polish sports club, established in 1945 in Kielce. In 1949, it became supported by Kielce's office of communist police (milicja), its official name was changed into Guards Sports Club Blekitni Kielce and hues were red-white-blue, like in other sports clubs affiliated with milicja. Enjoying support of both milicja and Urząd Bezpieczeństwa, Blekitni became the major sports organization in the area of Kielce, however, it never managed to win promotion to the Polish First Division. Blekitni's football team played last games in the Third League in the season 1998/1999, then it was merged with local rival, Korona Kielce.

The Cyprian Norwid Theatre in Jelenia Góra is a Polish repertory theatre founded in 1945. The Norwid Theatre in Jelenia Góra has two stages: Main Stage and Studio Stage. The theatre is named after Cyprian Norwid.

Freedom Monument is a monument in Bydgoszcz commemorating both the fallen Soviet and Polish soldiers who fought during the liberation of the city in January 1945, and the return of Bydgoszcz to Poland on 20 January 1920.

The Medical University of Gdańsk is the largest medical academic institution in northern Poland. It educates more than 5000 undergraduate and postgraduate students in four faculties.

The Germany–Poland border, the state border between Poland and Germany, is currently the Oder–Neisse line. It has a total length of 467 km (290 mi) and has been in place since 1945. It stretches from the Baltic Sea in the north to the Czech Republic in the south.

KPR Gwardia Opole is a men's handball club from Opole, Poland, that plays in the Superliga.

John Paul II High School in Tarnów is a high school in Tarnów, Poland. The school was established in 1945.

Łada Biłgoraj is a Polish football club based in Biłgoraj. The club was established in 1945.

Lechia Gdańsk is a Polish football club based in Gdańsk. The club was founded in 1945 by people expelled from Lwów, who were supporters of Poland's oldest football team Lechia Lwów, founded in 1903. The club's name comes from Lechia, a poetic name for Poland, and is a continuation of the name used by the club based in Lwów. In their early years, Lechia enjoyed some success, most notably finishing third in the Polish top division, before spending decades in the second and third tiers. In the early 1980s, Lechia won the Polish Cup, the Polish SuperCup, and played in a European competition for the first time. After having two mergers with other teams in the 1990s the club had to restart from the sixth tier in 2001. In May 2008 the club was promoted again to the Ekstraklasa, with the club's most recent success coming in 2019, finishing third in the league and again winning both the Polish Cup and SuperCup.

Lodz University of Technology (TUL) was created in 1945 and has developed into one of the biggest technical universities in Poland. Originally located in an old factory building, today covering nearly 200,000 sq. meters in over 70 separate buildings, the majority of them situated in the main University area. Almost 15,000 students are currently studying at the University. The educational and scientific tasks of the University are carried out by about 3,000 staff members.

The University of Łódź is a public research university founded in 1945 in Łódź, Poland, as a continuation of educational institutions functioning in Łódź in the interwar period — the Teacher Training Institute (1921–1928), the Higher School of Social and Economic Sciences (1924–1928) and a division of the Free Polish University (1928–1939).

The Wola Massacre Memorial on Górczewska Street is a war memorial located at 32 Górczewska Street in the Wola district of Warsaw, Poland.

The Ministry of Public Security, commonly known as UB or later SB, was the secret police, intelligence and counter-espionage agency operating in the Polish People's Republic. From 1945 to 1954 it was known as the Department of Security, and from 1956 to 1990 as the Security Service.

Narodowy Bank Polski is the central bank of Poland. It controls the issuing of Poland's currency, the złoty. The Bank is headquartered in Warsaw, and has branches in 16 major Polish towns. The NBP represents Poland in the European System of Central Banks, an EU organization.

National Day of the Rebirth of Poland is a former national holiday in the former People's Republic of Poland and a fraternal anniversary in the Polish United Workers Party and all Polish communists, celebrated from 1944 to 1989. It commemorates the signing of the PKWN Manifesto on 22 July 1944.

The National Museum in Szczecin is a museum in Szczecin, Poland, established on 1 August 1945. The main part of an exhibition is placed in Old House of the Pomeranian Estates, 1727-1729 by Gerhard Cornelius von Wallrave, Staromłyńska 27 Street.

Nicolaus Copernicus University in Toruń or NCU is located in Toruń, Poland. It is named after Nicolaus Copernicus, who was born in Toruń in 1473.

Odra Opole is a football club based in Opole, Poland, currently playing in the I liga.

OKS Stomil Olsztyn is a Polish football club based in Olsztyn, Poland. It was founded on 15 July 1945 as OKS Warmiak. The brightest era of this club was the 1990s when it played in the Polish First League. Between 2004 and 2012 the team was known as OKS 1945 Olsztyn.

Olimpia Poznań is a Polish multi-sport club from Poznań. It has athletics, archery, basketball, boxing, kendo, judo, swimming, tennis, and triathlon sections. The sections are formally independent of each other, sharing the history and name only. The football section, once a top-flight team for many years folded in 2005.

Przedsiębiorstwo Komunikacji Samochodowej is a major Polish enterprise dealing with inter-city public transport using coaches.

Gliwicki Klub Sportowy Piast Gliwice is a Polish football club based in Gliwice, Poland. In the 2018–19 season, Piast won its first Polish championship.

The Polish People's Party existed in post-World War II Poland from 1945 to 1949. In a period of increasing solidification of communist power in Poland but with the political system retaining some formal adherence to multiparty democracy principles, the PSL was a centrist non-communist party that was not allied with the communists. The PSL was defeated by the communist-based bloc in the rigged legislative elections of 1947.

Polonia Słubice is a football club based in Słubice, Poland.

The Pomeranian Military District was a military district of the Polish Armed Forces from 1945 to 2011. Formally it was subordinate to the Minister of National Defence in the operational matters of defense and detached government administration. The district command headquarters was at Torun (1945–1946), Bydgoszcz, Gdańsk, Koszalin, and then at Bydgoszcz. From 1947 to 2007 1 Gen. J. Dwernicki Street, from 2007 to December 2011 105th Szubinska Street.

The Provisional Government of National Unity was a government formed by the decree of the State National Council on 28 June 1945. It was created as a coalition between the Polish Workers' Party and politicians from close political sphere of Stanisław Mikołajczyk, the former prime minister of the Polish government-in-exile based in London.

Przekrój was the oldest Polish weekly newsmagazine in operation, established in 1945 in Kraków. After temporary closure in 2013, it was bought by photographer Tomasz Niewiadomski and subsequently relaunched in December 2016 as a quarterly magazine. Przekrój's matchless literary style and lively visual charm were created due to the collaboration with the avant-garde of Polish intellectuals, writers, poets, artists and cartoonists. Przekrój was the birthplace of writers such as Wisława Szymborska, Stanisław Lem and Czesław Miłosz.

Silesian Military District was one of three military districts in Poland, the other two being the Pomeranian Military District and the Warsaw Military District. All three were disbanded by the end of 2011 due to the restructuring of the Polish Army. Its headquarters was in Wrocław

Silesian Opera in Bytom is an opera company in Bytom, Silesia, Poland, that was founded in 1945. Its home is the former City Theatre, designed by architect Albert Bohm, that was built in Neoclassical style between 1898-1901.

The Filharmonia Śląska w Katowicach is a music institution in Katowice, Silesia, Poland. The Silesian Philharmonic in Katowice was founded in 1945. The first concert of the orchestra took place on 26 of May 1945. A mixed choir was added in 1973.

The Silesian University of Technology is a university located in the Polish province of Silesia, with most of its facilities in the city of Gliwice. It was founded in 1945 by Polish professors of the Lwow Polytechnic, who were forced to leave their native city and move to the Recovered Territories. In 2021, the prestigious Perspektywy Foundation ranked it as 6th best University of Technology in Poland and 13th overall.

Tygodnik Powszechny is a Polish Roman Catholic weekly magazine, published in Kraków, which focuses on social and cultural issues. It was established in 1945 under the auspices of Cardinal Adam Stefan Sapieha. Jerzy Turowicz was its editor-in-chief until his death in 1999. He was succeeded by Adam Boniecki, a priest.

The Warsaw Insurgents Cemetery is located at 174/176 Wolska Street in the Wola district of Warsaw. It was established in 1945 and occupies 1.5 hectares.

The Wrocław Opera is an opera company and opera house in the Old Town of Wrocław, Poland. The opera house was opened in 1841 and up to 1945 was named after the city's then German name, Oper Breslau.

Wrocław University of Science and Technology is a technological university in Wrocław Poland. With buildings and infrastructures dispersed throughout the city, its main facilities are gathered at a central location near Plac Grunwaldzki, alongside the Oder river. It operates three regional branches in Jelenia Góra, Legnica, and Wałbrzych. Huffington Post UK named Wrocław University of Science and Technology in the top 15 of the World’s Most Beautiful Universities Rankings.

Wydawnictwa Szkolne i Pedagogiczne is a Polish educational book publisher founded in Warsaw, Poland, in 1945.

KGHM Zagłębie Lubin is a Polish professional football club based in Lubin. Founded in 1945 as OMTUR Lubin, the club competes in the Ekstraklasa.

Zagłębie Sosnowiec is a football club based in Sosnowiec, Poland. The club was established in 1906. It won Polish Cup four times, and also was four times Polish runner up. Apart from football, the organization of Zagłębie has other departments, such as ice-hockey and men's basketball.

Zaglebie Walbrzych is a Polish multisports club in the south-western city of Wałbrzych. The club, in Walbrzych's neighbourhood of Biały Kamień, is the most famous for its football team.