Hammond Northshore Regional Airport (ICAO: KHDC, FAA LID: HDC) is a city-owned, public-use, joint civil-military, general aviation airport located three nautical miles (6 km) northeast of the central business district of Hammond, a city in Tangipahoa Parish, Louisiana, United States.

[1] The airport was previously an uncontrolled facility utilizing VHF-band UNICOM as a Common Traffic Advisory Frequency (CTAF).

[3] Hammond Northshore Regional Airport covers an area of 920 acres (370 ha) at an elevation of 46 feet (14 m) above mean sea level.

[1] For the 12-month period ending December 31, 2021, the airport had 86,500 aircraft operations, an average of 237 per day: 75% general aviation, 23% military and 2% air taxi.

[4] The Louisiana Air National Guard also maintains a non-flying unit, the 236th Combat Communications Squadron (236 CCS), at the airport.