- Clare Rod and Gun Club
- 10844 s Eberhart Ave, Clare, Michigan, 48617
- CNC Academy
- 1355 Remington Road, Suite D, Schaumburg, Illinois, 60173
- Courtyard by Marriott Chicago Elmhurst/Oakbrook Area
- 370 N, IL-83, Elmhurst, Illinois, 60126
- Creekside Consultants
- 1605 Benner Hwy, Clayton, Michigan, 49235
- Cricket Club
- 36 W Michigan Ave, Battle Creek, Michigan, 49017
- Critical Point Training
- 72550 Lassier Rd, Bruce Township, Michigan, 48065
- Crucible Defense Training Geneva
- 5686 West Maple Road, Geneva, Ohio, 44041
- Crucible Defensive Training
- 290 Marian Lake Blvd, Cuyahoga Falls, Ohio, 44223
- CrucibleDT Garrettsville, OH
- 10321 Silica Sand Road, Garrettsville, Ohio, 44231
- Detroit Arms
- 25986 Knollwood, New Baltimare, Michigan, 48051