Barisan Nasional, the coalition that had governed Malaysia since the country's independence in 1957, suffer an historic defeat in the 2018 Malaysian general election.

Barisan Nasional is a political coalition of Malaysia that was founded in 1974 as a coalition of centre-right and right-wing political parties to succeed the Alliance Party. It is the third largest political coalition with 30 seats in the Dewan Rakyat after Pakatan Harapan (PH) with 82 seats and Perikatan Nasional (PN) with 74 seats.

General elections were held in Malaysia on Wednesday, 9 May 2018. At stake were all 222 seats in the Dewan Rakyat, the lower house of parliament. The 13th Parliament was dissolved by Prime Minister Najib Razak on 7 April 2018. It would have been automatically dissolved on 24 June 2018, five years after the first meeting of the first session of the 13th Parliament of Malaysia on 24 June 2013.