Parliamentary elections were held in Slovakia on 5 March 2016 to elect the 150 members of the National Council. The ruling left-wing populist Direction – Social Democracy (SMER–SD) party remained the strongest party, but lost its majority. The Slovak Democratic and Christian Union – Democratic Party (SDKÚ-DS), which led the government between 2000–06 and 2010–12, was defeated heavily, failing to cross the electoral threshold and losing its representation in the National Council. The centre-right Christian Democratic Movement (KDH) also failed to cross the threshold for the first time since 1990, whilst the far-right nationalist Kotleba – People's Party Our Slovakia (ĽSNS) entered parliament for the first time.

The National Council of the Slovak Republic is the national parliament of Slovakia. It is unicameral and consists of 150 members, who are elected by universal suffrage under proportional representation with seats distributed via largest remainder method with Hagenbach-Bischoff quota every four years.