黎巴嫩县（Lebanon County, Pennsylvania）是美国宾夕法尼亚州东南部的一个县。面积939平方公里。根据美国2000年人口普查，共有人口120,327。县治黎巴嫩。

成立于1813年2月16日，县名意思是「白色的山」。

Lebanon County is a county located in the U.S. state of Pennsylvania. As of the 2010 census, the population was 133,568. Its county seat is Lebanon. The county was formed from portions of Dauphin and Lancaster counties in 1813, with minor boundary revisions in 1814 and 1821. Lebanon County comprises the Lebanon, PA Metropolitan Statistical Area, which is also included in the Harrisburg-York-Lebanon, PA Combined Statistical Area.