Operators
- Brazil
- Brazilian Air Force
- 1st Bomber Group (3 examples)
- Canada
- Royal Canadian Air Force
- United States
- United States Army Air Corps/United States Army Air Forces
- 1st Search Attack Group, Langley Field, Virginia (B-18A/B/C)
- 2d Bombardment Group, Langley Field, Virginia (B-18A)
- 3d Bombardment Group, Barksdale Field, Louisiana (B-18)
- 5th Bombardment Group, Hickam Field, Hawaii (B-18)**
- 6th Bombardment Group, Rio Hato Airfield, Panama, (B-18/B-18A/B)
- 7th Bombardment Group, Hamilton Field, California, (B-18)
- 5th Bombardment Group, Luke Field, Oahu, Hawaii Territory (B-18)**
- 9th Bombardment Group, Caribbean; Panama and South American air bases (B-18/B-18A/B)
- 11th Bombardment Group, Hickam Field, Hawaii Territory (B-18)**
- 13th Bombardment Group, Langley Field, Virginia (B-18A/B)
- 17th Bombardment Group, McChord Field, Washington (B-18)
- 19th Bombardment Group, Clark Field, Philippines Commonwealth (B-18)**
- 22d Bombardment Group, Muroc Field, California (B-18)
- 25th Bombardment Group, Caribbean (B-18/B)
- 27th Bombardment Group, Barksdale Field, Louisiana (B-18)
- 28th Bombardment Group, California, (B-18)
- 29th Bombardment Group, Langley Field (B-18A)
- 40th Bombardment Group, Panama, Puerto Rico (B-18/B)
- 41st Bombardment Group, California, (B-18)
- 45th Bombardment Group, Savannah Airfield, Georgia (B-18A)
- 47th Bombardment Group, McChord Field, Washington (B-18)
- 479th Antisubmarine Group, Langley Field, Virginia (B-18A/B)
Read more about this topic: Douglas B-18 Bolo