The Liberal Democratic Party of Belarus (Belarusian: Ліберальна-дэмакратычная партыя Беларусі, Russian: Либерально-демократическая партия беларуси, romanized: Liberal'no-Demokraticheskaya Partiya Belarusy), or ЛДПБ (LDPB), is a nationalist political party in Belarus. It was created in 1994 as the Belarusian successor of the Liberal Democratic Party of the Soviet Union.

Despite claiming to be a "constructive and democratic opposition" the party de facto supports the current president, Alexander Lukashenko (much like the LDPR with Vladimir Putin).

In the legislative elections, 13–17 October 2004, the party won 1 out of 110 seats. Its candidate in the presidential election of 2006, Sergei Gaidukevich, won 3.5% of the vote.

According to the official results of the elections to the local Councils of Deputies of the Republic of Belarus (2014), no candidate from the party was not able to become a deputy. Leader Gaydukevich is the deputy chairman of the Standing Committee of the National Assembly of Belarus for international affairs and national security. He was elected in 2016 a member of the National Council of the sixth convocation of the Minsk region.