Gardiner Airport (FAA LID: 29S) is a public use airport located two nautical miles (3.7 km) northwest of the central business district of Gardiner, a city in Park County, Montana, United States.

[1] Gardiner Airport covers an area of 38 acres (15 ha) at an elevation of 5,286 feet (1,611 m) above mean sea level.

It has one asphalt paved runway designated 10/28 which measures 3,200 by 55 feet (975 x 17 m).

[1] For the 12-month period ending August 31, 2004, the airport had 8,600 aircraft operations, an average of 23 per day: 93% general aviation and 7% air taxi.

At that time there were 9 aircraft based at this airport, all single-engine.