Jacques of Savoy, 2nd duke of Nemours (12 October 1531 – 15 June 1585) was the son of Philippe, Duke of Nemours, and became Duke of Nemours on his father's death in 1533.
He distinguished himself at the sieges of Lens and Metz (1552–1553), at the Battle of Renty (1554) and in the campaign of Piedmont (1555).He was a supporter of the house of Guise, and had to retire for some time into Savoy in consequence of a plot.
In 1567 he induced the court to return from Meaux to Paris, took part in the battle of Saint Denis, protested against the peace of Longjumeau, and repulsed the invasion of Wolfgang, Count Palatine of ZweibrĂĽcken.