Mears Creek Airfield (ICAO: 4MD0) is a small, privately owned general aviation airfield located in Lusby, Maryland, within Calvert County. It serves private pilots and light aircraft operations in the southern Maryland region. The airfield is not open to the public and does not support commercial airline service. It is typical of small private landing strips found throughout rural Maryland, catering to personal and recreational flying. Due to its private status and limited operational scope, detailed public information about the facility is scarce. Pilots seeking access would need to obtain prior permission from the owner.