Willow Run was a factory near Ypsilanti, Michigan in the United States that manufactured B-24 Liberator bombers during World War II.

Willow Run may also refer to:

• Willow Run Airport, a cargo and general aviation airport on the site of the former aircraft plant
  • Willow Run, Michigan, an unincorporated community established at the airport
• Willow Run Assembly, a former General Motors plant on the site of the former aircraft plant
• Willow Run Transmission, a General Motors factory on the site of the former aircraft plant
• Willow Run Laboratories, founded in 1946 as the Michigan Aeronautical Research Center, which in 1972 became the Environmental Research Institute of Michigan, after separating from the University of Michigan
• Willow Run (Husbands Run tributary), a stream in New Castle County, Delaware

This disambiguation page lists articles associated with the title Willow Run.
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