- Herzog Contracting Corp.
- Hewlett Packard
- Heywood Hospital
- HFandH
- HHS-OIG-Office of Audit Services
- HHS-OIG-OI Dallas Regional Office
- Hi-Desert Medical Center
- Hialeah Hospital
- Hidalgo Medical and Dental Services
- High Point Regional Hospital
- Higher Education Consortium of Central Massachusetts
- Highland Community Hospital
- Highland District Hospital
- Highland Farms, Inc.
- Highland Hospital
- Highland Park Ford
- Highland RIM Terrace
- Highlands at Wyomissing
- Highlands Hospital
- Highlands Medical Center
- Highlands-Cashiers Hospital
- Highmark Blue Cross Blue Shield
- Highpoint Health
- Highwoods Properties
- Hilb, Rogal and Hamilton Company
- Hill Air Force Base
- Hill County
- Hill Hospital of Sumter County
- Hill Top Research, Inc.
- Hill-Rom
- Hillcrest
- Hillcrest Hospital Claremore
- Hillcrest Hospital Cushing
- Hillcrest Hospital Pryor
- Hillcrest Hospital South
- Hillcrest Medical Center
- Hillel
- Hillicon
- Hillsborough Community College
- Hillsborough County
- Hillsborough County BOCC
- Hilltop Automotive
- Hilton Alexandria Old Town Virginia
- Hilton Arlington
- Hilton Arlington and Towers, Arlington VA
- Hilton Austin North
- Hilton Baptist Church
- Hilton Beaumont
- Hilton Bellevue
- Hilton Cincinnati Netherland Plaza