莱内县 （Lääne maakond，或称Läänemaa，「西部」的意思）是爱沙尼亚西部的一个县，北临波罗的海。面积2,383平方公里。2004年人口为28,101人。首府哈普沙卢。

下分二市十一镇。

爱沙尼亚行政区划 哈尔尤 希尤 东维鲁 耶尔瓦 约格瓦 莱内 西维鲁 派尔努 珀尔瓦 拉普拉 萨雷 塔尔图 瓦尔加 维尔扬迪 沃鲁

Lääne County (Estonian:Lääne maakond), or Läänemaa (literally "Western land"; German:Wiek, Latin:Rotalia), is one of 15 counties of Estonia. It is located in western Estonia and borders the Baltic Sea to the north, Harju County to the north-east, Rapla County to the east, Pärnu County to the south, and the island counties of Saare and Hiiu to the west. In January 2009 Lääne County had a population of 23,810 – constituting 2.0% of the total population in Estonia.