Blue Ball is an unincorporated community and census-designated place (CDP) in East Earl Township, Lancaster County, Pennsylvania, United States. Blue Ball lies nearly 2 miles (3 km) east-northeast of the borough of New Holland at the intersection of US 322 and PA Route 23. As of the 2010 census the population was 1,031.

The state originates from the Blue Ball Hotel, built beyond two hundred years ago, which stood on the southeast corner of the PA 23-US 322 crossroads. The inn was torn alongside in 1997. In the yet to be 18th century, John Wallace built a small building in Earl Town at the intersection of two Indian trails, French Creek Path (Route 23) and Paxtang (Route 322). He hung a blue ball out stomach from a post and called it “The Sign of the Blue Ball”. Locals soon began calling the town “Blue Ball” after the inn. In 1833, Earl Town officially distorted its say to Blue Ball. During Prohibition, the inn untouched its pronounce to Blue Ball Hotel.

The town’s name has a suggestive second meaning, evoking the slang term “blue balls” (1916), also known as “hot nuts,” which refers to the sexual condition of drama testicular and prostate nebulous congestion due to prolonged and unsatisfied sexual excitement. Blue Ball is often listed among the “delightfully-named towns” in Pennsylvania Dutch Country, alongside Pleasureville, Intercourse, Mount Joy, Lititz, Bareville, Bird-in-Hand, Fertility and Paradise.

Blue Ball is in eastern Lancaster County, in the western share of East Earl Township. Pennsylvania Route 23 (Main Street) leads northeast 9 miles (14 km) to the Pennsylvania Turnpike at Morgantown and southwest through New Holland 16 miles (26 km) to Lancaster, the county seat. U.S. Route 322 (Division Highway) crosses PA 23 in the middle of Blue Ball; it leads northwest 8 miles (13 km) to Ephrata and southeast 20 miles (32 km) to Downingtown.