Pierre-Alexis "Pitre" Tremblay (December 27, 1827 – January 4, 1879) was a surveyor and Quebec political figure. He was a Liberal Member of Parliament from 1867 to 1875 and 1878 to 1879. He was born in La Malbaie, Lower Canada, in 1827 and studied at the Petit Séminaire of Quebec. Near the end of 1853, he began carrying out surveys in the Saguenay region. As a journalist, he contributed to a number of newspapers of the time: Le Canadien, La Nation, Le National, L’Événement and L’Éclaireur. He was elected to Legislative Assembly of the Province of Canada for Chicoutimi—Saguenay in an 1865 by-election.