Cognomen Sénéca (Sénéca 
) , worldwide, is a very rare last name. The last name Sénéca is habitual in Western Europe, particularly Belgium, where it is a rare surname, and France, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sénéca | France, Belgium |
|
joseph sénéca French politician (1800-1878), FR (b. 1800) |
|
| georges sénéca Belgian politician, BE (b. 1937) |
|
|
| rémi sénéca french rugby union player, FR (b. 1995) |
|