The Lehigh Valley is a region in eastern Pennsylvania, USA, formed by the Lehigh River in Lehigh and Northampton Counties. It is part of the Great Appalachian Valley and is bounded to the north by Blue Mountain, to the south by South Mountain, to the west by Lebanon Valley, and to the east by the Delaware River and Warren County, New Jersey. The Valley is approximately 40 miles long and 20 miles wide, with Allentown being the largest city and county seat of Lehigh County, with a population of 125,845 residents as of the 2020 census.

The Allentown-Bethlehem-Easton metropolitan area, which includes the Lehigh Valley, is the third most populous metropolitan area in Pennsylvania, after Philadelphia and Pittsburgh, and the 68th largest metropolitan area in the US, with a population of 861,889 residents as of 2020. The region's core population centers are located in southern and central Lehigh and Northampton counties, along major highways such as Interstate 78, Interstate 476, Pennsylvania Route 309, and US Route 22.

The Lehigh Valley has a rich history in steel and other heavy manufacturing industries, which played a significant role in the region's employment and economic production during most of the 20th century.

Points of interest in Lehigh Valley Pennsylvania

- Dorney Park & Wildwater Kingdom - A popular amusement park with thrilling rides and water attractions.

- Historic Bethlehem - A charming district with restored buildings from the 18th and 19th centuries, as well as quaint shops and eateries.

- Lehigh Valley Wine Trail - A trail of 9 wineries in the region offering tastings and tours.

- Allentown Art Museum - A museum featuring a diverse collection of art from around the world, including works by renowned artists such as Rembrandt and Picasso.

- Lehigh Valley Zoo - A family-friendly zoo featuring a variety of animals, including African lions, red pandas, and bald eagles