The Alexander Dennis Enviro400 MMC is a low-floor double-decker bus produced by the British bus manufacturer Alexander Dennis since 2014, replacing the Alexander Dennis Enviro400. The Enviro400 MMC is produced at Alexander Dennis' Falkirk and Scarborough factories in the United Kingdom.

Alexander Dennis is a British bus manufacturing company based in Larbert, Scotland. The largest bus and coach manufacturer in the United Kingdom with a 50% market share in 2019, it has manufacturing plants and partnerships in Canada, China, Europe, Hong Kong, Malaysia, New Zealand, Singapore, South Africa and the United States.