The Mitsubishi Fuso Aero King (kana:三菱ふそう・エアロキング) is a series of heavy-duty double-decker tourist coach built by Mitsubishi Fuso Truck and Bus Corporation.

The Aero King first went on sale in 1984, after being introduced at the 1983 Tokyo Motor Show.

The engines that were used in the Fuso Aero Bus were the 8DC9 (turbocharged V-8, 380ps, used between 1984–1995 for MU515TA/MU525TA), the 8M21 (NA V-8, 420ps/430ps, used between 1995–2005 for MU612) and the 6M70 (turbocharged L-6, 420ps, used between 2008-2010 for MU66JS).