- Make (Years In Operation) – Plant
-
- Models
- Kelsey (1920-1924) – Newark, NJ
- GW
- G
- Kenworthy (–) – Mishawaka, IN
- 4-80
- 6-55
- 8-90
- Kessler (–) – Detroit, MI
- Super-Charge Four
- Eight
- King (1911-1924) – Detroit, MI
- H
- D
- J
- L
- Kissel (1907-1931) – Hartford, WI
- Custom-Built
- 44
- 55
- 55 Standard
- 55 DeLuxe
- 75 Standard
- 75 Deluxe
- 75
- 8-65
- 70
- 8-80
- 8-90
- 6-73
- 8-95
- 8-126
- Kleiber (1924-1929) – San Francisco, CA
- Six
- Klein Kar (1910-1923) – Richmond, VA
- 6-55-J
- 6-55-K
- 6-60-L
- Kurtz Automatic (1920-1924) – Cleveland, OH
- A
- 65
- Models
