Piedmont Triad International Airport (IATA: GSO, ICAO: KGSO, FAA LID: GSO; commonly referred to locally as "PTI") is an airport located in unincorporated Guilford County, North Carolina, west of Greensboro, serving the Piedmont Triad region of Greensboro, High Point and Winston-Salem in North Carolina, United States. The airport, located just off Bryan Boulevard, sits on a 3,770 acre (1,526 ha) campus and has three runways. It is the third busiest airport in North Carolina in terms of airplane movements, averaging 280 takeoffs and landings each day. As of 2025, GSO ranks 103rd in passenger arrivals and departures in the US, offering passenger service to 14 U.S. destinations. PTI is owned and operated by the Piedmont Triad Airport Authority.

This airport is included in the National Plan of Integrated Airport Systems for 2011–2015, which categorized it as a primary commercial service airport since it has over 10,000 passenger boardings (enplanements) per year.

A proposal to rename the airport to "Central North Carolina International Airport" passed in December 2017; the renaming was slated to become effective on January 1, 2018. Due to public objections, however, the name change is on hold.