Myrina may refer to:
- Places and jurisdictions
- Myrina, Greece, capital of the Greek island of Lemnos
- Myrina (Aeolis), in Mysia, also called Sebastopolis, ancient city and bishopric on the coast of Mysia (now in Turkey)
- Myrina (Crete), a town of ancient Crete
- Other
- Myrina (mythology), name of several female characters in Greek mythology
- Myrina (butterfly), a genus of butterflies
- Myrina, the first supertanker built in the UK