Mount Gretna is a borough in Lebanon County, Pennsylvania, United States.

[3] The borough was founded by the Pennsylvania Chautauqua Society, which was attracted by the area's natural landscape and beauty, by the 1890s.

It features a nationally ranked juried art show (third weekend in August), jazz and chamber music concerts, lectures, book reviews, and an annual tour of historic homes and cottages (first Saturday in August).

The Connewago Lake features a Victorian-era bathhouse with high-dive, floating docks and a sandy beach area.

The community also has a roller rink, open-air playhouse, miniature golf course, several restaurants, playgrounds, and an award-winning ice cream parlor known as the Jigger Shop.

The surrounding area, which includes seven distinct neighborhoods, has a year-round population estimated at 1,500 people.

[6] According to the United States Census Bureau, the borough has a total area of 0.2 square mile (0.4 km2), all land.