- ITS America
- ITW Shakeproof Automative
- IU Health Arnett Hospital
- IU Health Ball Memorial Hospital
- IU Health Bedford Hospital
- IU Health Bloomington
- IU Health Methodist Hospital
- IU Health North Hospital
- IU Health Paoli Hospital
- IU Health Saxony Hospital
- IU Health Tipton Hospital
- IU Health University Hospital
- IU Health West Hospital
- IU Health White Memorial Hospital
- Ivinson Memorial Hospital
- IVS Associates
- Iwaniec Associates, Inc.
- IWANNA, Inc.
- J and J Snack Foods Corp
- J Schlegel Marketing Inc.
- J. Brandt Co.,Inc.
- J. Crew Group
- J. Rolfe Davis Insurance
- J. Sargeant Reynolds Community College
- J. Spargo and Associates
- J. T. Rhodes, CPA
- J. Torres Company
- J. Tyler Services Inc.
- J.C. Blair Memorial Hospital
- J.C. Clegg Public Library
- J.F. Ahern Company
- J.P. Morgan Chase and Co.
- J.R., Inc.
- Jack Endo Electric INC
- Jack Hughston Memorial Hospital
- Jackson County
- Jackson County Memorial Hospital
- Jackson County Osteopathic Medical Association
- Jackson County Public Health Department
- Jackson County Regional Health Center
- Jackson Drury Inn and Suites
- Jackson Hospital
- Jackson Hospital
- Jackson Madison County General Hospital
- Jackson Medical Center
- Jackson Memorial Hospital-Holtz Children's Hospital
- Jackson North Medical Center
- Jackson Save A lot
- Jackson South Medical Center
- Jackson State University