English abbreviations from rho to ri
- RHO (Southern Rhodesia (ISO 3166 trigram; obsolete 1980))
- RHP (Ramechhap Airport)
- RHPA (Reverse Hemolytic Plaque Assay)
- RHPS ((The) Rocky Horror Picture Show)
- RHQ (Regimental Headquarters)
- RHR (Rural Hillside Residential)
- RHRA (Regal Heights Residents' Association)
- RHRDF (Royal Hutt River Defence Forces)
- RHRE (Red Hook Resource Exchange)
- RHRN (Royal Hutt River Navy)
- RHS (Rural Housing Service)
- RHSM (Reduced horizontal separation minimal)
- RHT (Alxa Right Banner Badanjilin Airport)
- RHU (Replacement Holding Unit)
- RHUL (Royal Holloway, University of London)
- RHV (Reid-Hillview Airport of Santa Clara County)
- RHWCD (Random House Webster's College Dictionary)
- RHWR (Radar Homing and Warning Receiver ("raw" for short))
- RHyperT (Right hypertropia)
- RHypoT (Right hypotropia)
- RHZ (Rolling Hills Zoo)
- RI (Rex et Imperator, Regina et Imperatrix King-Emperor)