大烟山国家公园（Great Smoky Mountains National Park），又名大雾山国家公园，是位于美国东部，跨越田纳西州和北卡罗来纳州的一座国家公园。由小罗斯福总统于1940年9月2日在公园内的纽芳隘口宣布成立。大烟山国家公园号称是美东最后一片广大的原始林。占地2100平方公里。大烟山国家公园以其丰富的物种而闻名。由于大烟山国家公园内的海拔高度变化剧烈，加之降雨量充沛，因而使大烟山公园极富生物多样性。另一方面大烟山国家公园也是切罗基人的世居地。由于441号公路横贯大烟山公园，使得大烟山公园成为美国最多人游览的国家公园之一。但另一方面，大烟山国家公园也面临严重的空气污染（来自观光者的汽车尾气及周边的发电厂）、酸雨等问题。

Great Smoky Mountains National Park is a United States National Park and UNESCO World Heritage Site that straddles the ridgeline of the Great Smoky Mountains, part of the Blue Ridge Mountains, which are a division of the larger Appalachian Mountain chain. The border between Tennessee and North Carolina runs northeast to southwest through the centerline of the park. It is the most visited national park in the United States. On its route from Maine to Georgia, the Appalachian Trail also passes through the center of the park. The park was chartered by the United States Congress in 1934 and officially dedicated by President Franklin Delano Roosevelt in 1940. It encompasses 522,419 acres (816.28 sq mi; 211,415.47 ha; 2,114.15 km), making it one of the largest protected areas in the eastern United States. The main park entrances are located along U.S. Highway 441 (Newfound Gap Road) at the towns of Gatlinburg, Tennessee, and Cherokee, North Carolina. It was the first national park whose land and other costs were paid for in part with federal funds; previous parks were funded wholly with state money or private funds.