Emlenton is a borough in Clarion and Venango counties in the U.S. state of Pennsylvania. The population was 625 at the 2010 census. Of these, 617 were in Venango County, and eight were in Clarion County. The borough is home to the Emlenton Bridge on I-80, which spans the Allegheny River.

Venango County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 50,454. Its county seat is Franklin. The county was created in 1800 and later organized in 1805. The county is part of the Northwest Pennsylvania region of the state.