Willow Run is:
- the name given to an area of Ypsilanti Township on the east side of town
- an airport/industrial complex, Willow Run Airport
- a school district, the Willow Run Community Schools
- the General Motors Willow Run Transmission factory
During World War II, Ford's Willow Run Bomber Plant, the first assembly line approach to aircraft production, was a key part of the "Arsenal of Democracy." By 1944, the plant was completing a B-24 every hour.