Lychna (Greek: Λύχνα) is a village and a community in the island of Lemnos, Greece. In 2001 its population was 132 people for the village, and 338 for the community, which includes the village Anemoessa. It is part of the municipal unit of Moudros. It is situated at about one kilometer from the swampy shore of the bay of Moudros, at 10 m elevation.