is a city in and the county seat of Lycoming County, Pennsylvania in the United States. The population was 30,706 at the 2000 census. It is the principal city of and is included in the Williamsport, Pennsylvania Metropolitan Statistical Area, which is included in the Williamsport-Lock Haven, Pennsylvania Combined Statistical Area.
Williamsport was incorporated as a borough on March 1, 1806, and as a city on January 15, 1866. The city is the original home of Little League Baseball, founded in 1939 as a three-team league.
In the late 1800s Williamsport was known as "The Lumber Capital of the World" because of its thriving lumber industry. It also was the birthplace of the national newspaper
in 1882. Williamsport once had more millionaires per-capita than anywhere in the world. The area's local high school, the Williamsport Area High School, uses The Millionaires as its mascot.