McDonnell HRH

XHRH
Role Cargo helicopter
National origin United States
Manufacturer McDonnell Aircraft
Status Cancelled; mockup phase only
Primary user United States Marine Corps
Number built 0

The McDonnell HRH, company designation Model 78, was a 1950s transport helicopter proposal for the United States Marine Corps (USMC) by McDonnell Aircraft, designed to operate from Commencement Bay-class escort carriers.