W. K. Kellogg Airport (IATA: BTL, ICAO: KBTL, FAA LID: BTL) is a city-owned, public-use, joint civil-military airport located three nautical miles (6 km) west of the central business district of Battle Creek, a city in Calhoun County, Michigan, United States. The airport is accessible by road from Helmer Road, and is located near I-94. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 2017–2021, in which it is categorized as a regional general aviation facility. It is also known as W. K. Kellogg Regional Airport.

In addition to general aviation, the airport supports air cargo and corporate flight operations. It is home to Western Michigan University College of Aviation, Duncan Aviation – the nation's largest family-owned aircraft refurbishing company — WACO Classic Aircraft Corporation, SEMCO Energy Gas Company, and other aviation businesses. The Battle Creek Field of Flight Air Show and Balloon Festival is also held annually at Kellogg Airport.

The 110th Wing (110 WG), a unit of the Michigan Air National Guard, uses a portion of the airport as a military installation known as Battle Creek Air National Guard Base. The 110th Wing is operationally gained by the Air Combat Command (ACC).

This airport should not be confused with the W.K. Kellogg Airport in Pomona, California, which operated from 1928 to 1932 and was then the largest privately owned airport in the country.