| Birth Date: | 9 April 1893 |
| Birth Place: | Tarbes, France |
| Death Place: | Narbonne, France |
| Weight: | 193 lb |
| Ru Position: | Lock, No. 8 |
| Repyears1: | 1920-1927 |
| Repcaps1: | 31 |
| Reppoints1: | 9 |
Aimé Cassayet-Armagnac (9 April 1893 - 26 May 1927) was a French rugby union player who competed in the 1924 Summer Olympics. He was born in Tarbes and died suddenly in Narbonne after suffering acute peritonitis followed by meningitis. In 1924 he won the silver medal as a member of the French team.[1]