Jean-Baptiste Lauzon (March 15, 1858 – June 18, 1944) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba on three occasions: from 1897 to 1899, from 1907 to 1910, and from 1914 to 1915. Lauzon was a member of the Conservative Party. Prendergast resigned shortly after the election, and Lauzon was elected to take his place in the legislature in a by-election held on February 7, 1897. He defeated Liberal candidate S.A.D. Bertrand by 388 votes to 208, and sat with the Conservative caucus on the opposition benches of the legislature.