Jacques-Maurice des Landes d’Aussac de Saint Palais (November 15, 1811 – June 28, 1877) was an American prelate of the Roman Catholic Church.
De Saint Palais was born in La Salvetat, and ordained to the priesthood on May 28, 1836 in the Church of Saint-Sulpice, Paris.
In July 1836 De Saint Palais left to join Bruté in America, where he served in various parishes.
Bishop De Saint Palais had to contend with both a cholera epidemic, and the American Civil War, during which several priests from the diocese served as chaplains.
He recognized that Indianapolis had become a major city, but deferred the decision to move the seat of the diocese to his successor.