| Honorific Prefix: | Saint |
| Tomaida de Alejandría | |
| Titles: | Martyr |
| Birth Date: | 5th century |
| Death Date: | 476 AD |
| Feast Day: | April 14 |
| Patronage: | Alexandria, Egypt |
Tomaida de Alejandría (ar|تمادة الإسكندرية; born 5th century) was a Christian saint and martyr, she is honored and celebrated in the Roman Catholic Church and Eastern Orthodox Church on April 14.
Tomaida was born in the 5th century, she was native to Alexandria, Egypt. Eventually, Tomaida entered a marriage to a fisherman, her father-in-law soon became captivated and infatuated with Tomaida and endeavored to seduce her with his advances.
Whilst defending her chastity, she was stabbed to death by her father-in-law. After the incident, he went blind. He was tried and convicted and soon sentenced to be decapitated for his crime.