Pierre-Paul Margane de Lavaltrie (August 13, 1743 – September 10, 1810) was a seigneur and political figure in Lower Canada.
He was born in Montreal in 1743, the only son of Pierre-Paul Margane de Lavaltrie, a seigneur and captain in the French army based in New France.
He joined the colonial army at the age of 13, becoming lieutenant and fought at the Battle of the Plains of Abraham in 1759.
Although he had opposed constitutional change, Lavaltrie was elected to the 1st Parliament of Lower Canada for Warwick in 1792.
He did not run in 1796 and his son-in-law, Charles-Gaspard Tarieu de Lanaudière, was elected in Warwick instead.