Alexandre-Pierre-Thomas-Amable Marie de Saint Georges (15 February 1795 - 28 April 1870, usually called Pierre Marie (de Saint-Georges), was a French politician.
Marie was born in Yonne on 15 February 1795 and entered public life as a lawyer under the Restoration. He was elected to the Chamber of Deputies in 1842 and held the seat until the February Revolution.
He became minister of public works in the provision government in 1848, but was forced out in May of that year. Marie was elected to the Executive Commission and became President of the National Assembly during June 1848. He was then made minister of justice in July 1848 and held the post till December 1848. Marie retired in May 1849 and retired to private life for over a decade. He returned briefly to politics in the 1860s.