Lychna (Greek: Λύχνα) is a village and a community in the island of Lemnos, Greece.

According to tradition, its name (meaning "lights") is derived from the small lamps of the houses, that were visible at night to sailors on the bay.

On the English Admiralty charts a small cape named Akra Likhna was indicated.

The same error was made by the travellers Conze (1850, Talihna) and De Launay (1898, Talikna).

Its residents were farmers and pastoralists, and many worked in Asia Minor as builders and artisans.

In 1910, a beautiful school was built in a prominent spot at the expense of Dimitrios G. Makris, a businessman in Egypt.