Front of National Unity or National Unity Front (Polish: Front Jedno?ci Narodu, FJN) was a popular front supervising elections in the Polish People's Republic and also acted as a coalition for the dominant communist Polish United Workers' Party (PZPR) and its allies. It was founded in 1952 as National Front (Front Narodowy) and renamed to Front of National Unity in 1956. It was the heir of the Democratic Bloc (Blok Demokratyczny) which ran in the elections of 1947 before the merger between communists and socialists.
The Front was created by and subordinate to the PZPR. Its membership included all three legal Polish political parties (the PZPR, Democratic Party, and United People's Party) and many organizations (such as trade unions). During elections it had a near monopoly (varied depending on particular time) on registering candidates who had the right to participate in the elections. As was the case with other popular fronts in the Soviet bloc, the member parties of the Front were largely subservient to the PZPR; they had to accept the PZPR's "leading role" as a condition of their existence.