Norsjø

Norsjø
Lake Norsjo in Gvarv
Location	Skien, Nome, Sauherad (Telemark)
Coordinates	59°18′N 9°20′E / 59.300°N 9.333°E / 59.300; 9.333Coordinates: 59°18′N 9°20′E / 59.300°N 9.333°E / 59.300; 9.333
Basin countries	Norway
Surface area	55.48 km2 (21.42 sq mi)
Max. depth	176 m (577 ft)
Shore length1	123.35 km (76.65 mi)
Surface elevation	15 m (49 ft)
1 Shore length is not a well-defined measure.

Norsjø is a lake in the municipalities of Skien, Nome and Sauherad in Telemark county, Norway. It is 55 km² in area and 15 meters above sea level.

Norsjø is part of the Telemark Canal. Most rivers in Telemark meet Norsjø on their way before ending up in the Skien river or Porsgrunn river. Norsjø is a source of drinking water for Skien municipality.