The Lancaster Barnstormers are an Atlantic League of Professional Baseball team from Lancaster, Pennsylvania. They have won 1 Atlantic League championship, and are the first team in the league to win by a four-game sweep. Since 2005, the Barnstormers' home stadium is Clipper Magazine Stadium.
The word "barnstormer" refers to Lancaster County, Pennsylvania's agricultural tradition and its own baseball heritage. "Barnstorming" baseball players visited Lancaster in the early 1900s to play exhibition baseball games on the county's farmland.
The Lancaster Barnstormers' rival is the York Revolution.