The Allegheny River was a river that ran through Pennsylvania, United States of America, North America, Earth. Sean Aloysius O'Brien was found dead in the Allegheny River with 32 or 34 bullets in him in 1902, following that year's strike. (DS9: "Bar Association") The Galaxy-class starship USS Allegheny, named after this river, is the focus of a mission in the non-canon video game Star Trek: Armada II.