Kalixfors Airfield (ICAO: ESUK) is a small military airfield located in northern Sweden, situated in the remote wilderness near Kiruna in Lapland. It lies well above the Arctic Circle and is associated with Swedish defense activities in the region. The airfield is not a commercial facility and does not serve scheduled passenger traffic. It operates primarily in a military or restricted capacity, making public information about its operations limited. Given its proximity to Kiruna, which has its own commercial airport (Kiruna Airport, IATA: KRN), Kalixfors serves a distinctly different and specialized function within Swedish aviation infrastructure.