Segezha (; ; ) is a town and the administrative center of Segezhsky District of the Republic of Karelia, Russia, located north of Petrozavodsk on the Segezha River and on the western shore of Lake Vygozero. Population:

It was founded as a railway station on Murmansk Railway in 1915. A small settlement grew around the station; it was granted town status in 1943. The area around Segezha held many of the early camps within the Soviet gulag system and was known as Segezhlag.