McCollum Airport - Cobb County Airport - McCollum Field - RYY is a public airport located 21 miles (34 km) northwest of the central business district of Atlanta, immediately south of the city of Kennesaw in Cobb County, Georgia, United States. 

It is also designated as a weather station, although it does not operate between the hours of midnight and 6:00 a.m.

The airport is located on nearly 320 acres of land, has one runway which is 6,305 feet (1,921 m) long, and is east-west oriented, with headings of 089 and 269. Cobb Place is at the east end, with Cobb Parkway and old 41 intersecting McCollum Parkway on the west end.

The airfield sits at 1,040 feet (317 m) above mean sea level somewhat above average terrain for the area.

There are over 350 aircraft based at McCollum, most of them being single-engine. The airport has a control tower.