Jacques-Nompar II de Caumont, duc de La Force

Jacques-Nompar II de Caumont, duc de La Force (died 19 April 1699) was a French nobleman and peer, the son of Jacques de Caumont, Marquis de Boësse (died 1634) and Louise de Saint Georges. He held the title of Marquis de Boësse until the death of his grandfather, Henri-Nompar de Caumont, duc de La Force. He became a peer and assumed the title of duc de La Force at the closing of parliament 10 February 1678.

He married as his first wife, in 1661, Marie de Saint Simon (died 1670), daughter of Antoine de Saint Simon, marquis de Courtomer and Suzanne Madeleine, and by her, had three daughters:

He married, as his second wife, 12 March 1673, Suzanne de Beringhen (died 1731), daughter of Jean de Beringhen and Ne de Menoux), and by her had three sons and four daughters:

He died 19 April 1699 at Château de la Boulaye, near Évreux in Normandy. He was succeeded by his son Henri-Jacques Nompar de Caumont, duc de La Force.