The Hawker 4000, originally known as the Hawker Horizon, is a super-midsize business jet developed by Hawker Beechcraft.

Hawker Beechcraft Corporation (HBC) was an American aerospace manufacturing company that built the Beechcraft and Hawker business jet lines of aircraft between 2006 and 2013. The company headquarters was in Wichita, Kansas, United States, with maintenance and manufacturing locations worldwide. The history of Hawker Beechcraft originated in 1994 when Raytheon merged its Beech Aircraft Corporation and Raytheon Corporate Jets units.