Limni (Greek: Λίμνη meaning "lake") is a town and a community in the northwestern part of the island of Euboea, Greece.

It is located northwest of Chalkida, the main city of Euboea, and southeast of the town of Istiaia.

It is built at the foot of a mountain slope, on a bay of the North Euboean Gulf.

The community Limni consists of the following settlements: Limni was the home of the independence fighter Angelis Govios, Greek resistance activist Lela Karagianni and the film director and screenwriter Nikos Tsiforos.

In 1959 the English writer Philip Sherrard bought part of disused magnesite mine near Limni, planted trees and plants where the former mine installations had been, and restored the abandoned homes of the former directors who had lived there before the Second World War.