Alphabetical company index for letter/character "J", page 4 of 15
- James Madison University
- James River Coal Co.
- James River Group Holdings Ltd.
- Jamesburg Public School District
- Jameson Memorial Hospital
- Jamestown 1 School District
- Jamestown Area School District
- Jamestown C-1 School District
- Jamestown City School District
- Jamestown College
- Jamestown Elementary School District
- Jamestown Regional Medical Center
- Jamestown School District
- Jamesville-Dewitt Central School District
- Jamul-Dulzura Union Elementary School District
- Jane Phillips Memorial Medical Center
- Jane Phillips Nowata Hospital
- Jane Todd Crawford Hospital
- Janesville Consolidated School District
- Janesville School District
- Janesville Union Elementary School District
- Janesville-Waldorf-Pemberton School District
- JangoMail
- Janus Capital Group Inc.
- Janus International
- Jarden Corp.
- Jarrell Independent School District
- Jarrett Logistics Systems
- Jarrow Group
- Jarvis Christian College
- Jason Industries Inc.
- Jasper 01 School District
- Jasper CCSD 17
- Jasper City School District
- Jasper Co. R-V
- Jasper County
- Jasper County Cud 1
- Jasper County School District
- Jasper County, IA
- Jasper County, IL