拉希詹是伊朗的城市，位于该国西北部里海沿岸，由吉兰省负责管辖，面积1,428平方公里，海拔高度4米，主要农产品有茶叶和稻米，2012年人口81,817。

Lahijan (Persian:Lāhijān‎‎, also known as, Lāhijān) is a Caspian sea resort in and the capital of Lahijan County, Gilan Province, Iran. At the 2006 census, its population was 71,871, in 21,518 families.

The resort Lahijan has both traditional and modern architecture. The town, which has an Iranian-European urban structure, lies on the northern slope of the Alborz mountains. Its culture and climatic favorable condition have made Lahijan a major tourist hub in northern Iran. The city is basically founded on the sediments remaining from big rivers in Gilan, including the Sefid-Rud (White River). Historically, the city was the major business center and of course the capital of East Gilan during the time of special rulers. Lahijan has also been a tourism hub of the Islamic world during different eras in Iran's history.