| Elvira Efstathiou | |
| Birth Name: | Eleftheria Evgenia Efstathiou |
| Birth Date: | 5 July 1989 |
| Birth Place: | Athens, Greece |
| Club: | Panathinaikos |
Eleftheria Evgenia "Elvira" Efstathiou (Greek, Modern (1453-);: Ελευθερία Ευγενία Ευσταθίου; born 5 July 1989) is a Greek swimmer. She competed in the 400 and 800 metre freestyle and 200 metre butterfly at the 2008 Summer Olympics[1]