Seven Fields is a borough in Butler County, Pennsylvania, United States.

The borough is part of a rapidly growing suburban area north of Pittsburgh.

Pennsylvania Route 228 (Mars Road) runs through the borough, leading east 3 miles (5 km) to the borough of Mars and west 2 miles (3 km) to Interstate 79, just north of its interchange with the Pennsylvania Turnpike.

According to the United States Census Bureau, Seven Fields has a total area of 0.81 square miles (2.1 km2), all land.

21.8% of all households were made up of individuals, and 2.4% had someone living alone who was 65 years of age or older.