| Armand Nompar de Caumont | |
| 6th Duke of La Force Marquis of La Force | |
| More: | no |
| Spouse: | Anne-Elisabeth Gruel de Boismont |
| Issue: | Jacques-Nompar III de Caumont, duc de La Force Olympe de Caumont La Force Antonin de Caumont La Force Armand de Caumont La Force |
| Noble Family: | Caumont |
| Father: | Jacques-Nompar II de Caumont, duc de La Force |
| Mother: | Suzanne de Beringhen |
| Birth Date: | 7 May 1679 |
Armand Nompar de Caumont, 6th Duke of La Force (7 May 1679 – 3 July 1761) was a French nobleman and peer, a son of Jacques-Nompar II de Caumont, duc de La Force and Suzanne de Beringhen. He held the title of Marquis de Boësse until the death of his elder brother, Henri-Jacques Nompar de Caumont, duc de La Force. He assumed the title of duc de La Force and became a peer at the closing of parliament 13 March 1727.
He married, 17 July 1713, Anne-Elisabeth Gruel de Boismont, widow of Jean François Michel de la Brosse, daughter of Jacques Gruel de Boismont of Hyesmes in Normandy and Marie de Brillard du Perron. The couple had three sons and a daughter:
He died 3 July 1761 and was succeeded by his eldest son Jacques-Nompar III de Caumont, duc de La Force.