- Make (Years In Operation) – Plant
-
- Models
- Ace (1920-1922) – Ypsalanti, MI
- T
- G
- F
- C
- L
- Adelphia (1920) – Philadelphia, PA
- 4B
- Adria (1921-1922) – Batavia, NY
- A-1
- Ajax (1920-1921) – Boston, MA
- No models named
- Albatross (1939) – New York, NY
- No models named
- Alena Steam (1922) – Indianapolis, IN
- Steam
- Allen (1913-1922) – Columbus, OH
- 43
- Alsace (1920-1921) – New York, NY
- No models named
- Ambassador (1921-1925) – Chicago, IL
- R
- D-1
- Amco (1917-1922) – New York, NY
- No models named
- American (1917-1924) – Plainfield, NJ
- 6-B
- C-60
- D-66
- American Austin (1930-1935) – Butler, PA
- No models named
- American Bantam (1938-1941) – Butler, PA
- 60
- 65
- American Steram Car (1926-1942) – West Newton, MA
- No models named
- American Steamer (1922-1924) – Chicago, IL
- No models named
- Anderson 916-1925() – Rock Hill, SC
- S-30,
- S-40
- Aluminum Six
- Big Six
- 41
- 50
- Ansted (1921 and 1926) – Connersville, IN
- Six
- Apperson (1902-1926) – Kokomo, IN
- 1920
- Anniversary
- 8-21
- Beverly
- 6-23
- 8-23S
- 6-24
- Six
- Straightaway Eight
- V-Type Eight
- Eight
- Argonne (1919-1920) – Jersey City, NJ
- Argonne Four
- Arrowhead (1936) – Los Angeles, CA
- Three-Wheeler
- Astor (1925-1927) – Hagerstown, MD
- Taxi
- Astra (1920) – St. Louis, MO
- Astra
- Auburn (1900-1936) – Auburn, IN
- 6-39
- 6-51
- 6-43
- 6-63
- 8-36
- 6-66
- 8-88
- 4-44
- 8-77
- 76
- 88
- 115
- 6-80
- 8-90
- 120
- 6-85
- 8-95
- 125
- 8-98
- 8-98A
- 8-100
- 8-100A
- 12-160
- 12-160A
- 8-101
- 8-101A
- 12-161
- 12-161A
- 8-105
- 12-165
- 6-52X
- 6-52Y
- 12-50
- 6-653
- 8-851
- 6-654
- 8-852, 8
- Austin (1905-1920) – Grand Rapids, MI
- Highway King
- Models
