斯卡梅尼亚县（Skamania County, Washington）是美国华盛顿州西南部的一个县，南隔哥伦比亚河与俄勒冈州相望。面积4,361平方公里。根据美国2000年人口普查，共有人口9,872人。县治史蒂文森 (Stevenson)。

成立于1854年3月9日。县名来自奇努克语，是「湍急的水」的意思，指的是哥伦比亚河。

Skamania County /skəˈmeɪniə/ is a county located in the U.S. state of Washington. As of the 2010 census, the population was 11,066. The county seat and largest incorporated city is Stevenson, although the Carson River Valley CDP is more populous. The county was founded in 1854 and derives its name from the Cascades Chinook word sk'mániak, meaning "swift waters".