瑞尼尔山国家公园(Mount Rainier National Park)也译作雷尼尔山国家公园，是一座位于美国华盛顿州皮尔斯县东南的国家公园。建园于1899年3月2日，是美国第五座国家公园。公园面积为368平方英哩(954平方公里)，包括了瑞尼尔山全境——一座14,410呎(4,392米)高的层状火山。这座山从周遭的平地中陡然升起，使得园区海拔分布从1600呎(490米)到超过14,000呎(4,300米)。园区的95%是保存在原始状态，自1988年即被认定。最高点在Cascade Range，周遭满是峡谷、瀑布、冰穴以及数量超过25个的冰河。休眠的火山常常笼罩在云里，每年为峰顶带来数量庞大的雨水与雪花，并且让周末许多前来观赏的游客无法看到神秘面纱后的峰顶。

Mount Rainier National Park is a United States National Park located in southeast Pierce County and northeast Lewis County in Washington state. It was established on March 2, 1899 as the fifth national park in the United States. The park encompasses 236,381 acres (369.35 sq mi; 956.60 km) including all of Mount Rainier, a 14,411-foot (4,392 m) stratovolcano. The mountain rises abruptly from the surrounding land with elevations in the park ranging from 1,600 feet to over 14,000 feet (490 - 4,300 m). The highest point in the Cascade Range, around it are valleys, waterfalls, subalpine meadows, old-growth forest and more than 25 glaciers. The volcano is often shrouded in clouds that dump enormous amounts of rain and snow on the peak every year and hide it from the crowds that head to the park on weekends.