Brian Muntayalwa Mundubile (born 5 January 1971) is a Zambian politician serving as the Member of the National Assembly for Mporokoso since 2016. He is a member of the Patriotic Front.
Mundubile stood as the Patriotic Front MP candidate in Mporokoso constituency at the August 2016 general election and was elected. President Edgar Lungu then appointed him as the Provincial minister for Northern Province the following month. In July 2019, he was transferred to being the government chief whip.
At the August 2021 general election, he stood again as the Patriotic Front MP candidate in Mporokoso and was re-elected. After the Patriotic Front finished second to the United Party for National Development in the presidential election, Mundubile was appointed as the Leader of the Opposition. In November 2023, the Patriotic Front president removed him as the leader of the opposition.
In late 2022, Mundubile was one of the members who applied to be a candidate in a proposed convention in which the successor of Edgar Lungu (who decided to retire) for the Patriotic Front presidency would be chosen. Lungu was given back the title of PF president in October 2023, putting a halt to any plans for a convention.
In November 2024, the Patriotic Front joined the Tonse Alliance, with Edgar Lungu (the PF president) appointed as the chairperson and Dan Pule (the Christian Democratic Party president) as the vice chairperson. Lungu travelled to South Africa in early 2025 for medical treatment and decided that Given Lubinda should be the chairperson in the interim. On 5 June 2025, Lungu passed away and disagreements appeared within the alliance over who should be the acting chairperson between Pule (who was the vice chairperson) and Lubinda (who Lungu decided should be the caretaker), causing the alliance to have two factions.
In early 2026, the faction of the Tonse Alliance led by Pule decided that a convention needs to take place to choose the alliance's presidential candidate (to replace Lungu) in preparation for the 2026 general election to happen in August that year. Dan Pule (the Christian Democratic Party president) and Brian Mundubile (a Patriotic Front member) are the two members of the alliance that applied for the position. On 28 January 2026, a convention took place and Mundubile was chosen as the alliance's 2026 presidential candidate to challenge incumbent President Hakainde Hichilema and it was maintained that the Forum for Democracy and Development (FDD) will be the party used for candidacy at the election.
On 7 January 2026, Pule made an announcement stating that the alliance members decided to expel the Patriotic Front (PF) from the alliance. Due to Mundubile choosing to associate with the Pule faction and going ahead to participate in the convention that took place on 28 January 2026 despite the internal disagreements, it was decided that Mundubile is no-longer a member of the Patriotic Front. So, Mundubile began campaigning to participate in the August 2026 presidential election as the FDD candidate.